Number of the day: 158293

Properties of the number 158293:

158293 is a cyclic number.
158293 is the 14543^th prime.
158293 has 5 antidivisors and 158292 totatives.
158293 has a triangular digit sum 28 in base 10.
158293 has sum of divisors equal to 158294 which is an emirpimes.
Reversing the decimal digits of 158293 results in an emirp.
158293 = 79147² - 79146² is the difference of 2 nonnegative squares in 1 way.
158293 is the sum of 2 positive triangular numbers.
158293 is the difference of 2 positive pentagonal numbers in 1 way.
158293 = 62² + 393² is the sum of 2 positive squares in 1 way.
158293 = 54² + 89² + 384² is the sum of 3 positive squares.
158293² = 48732² + 150605² is the sum of 2 positive squares in 1 way.
158293² is the sum of 3 positive squares.
158293 is a proper divisor of 397⁴³⁹⁷ - 1.
158293 is an emirp in (at least) the following bases: 5, 9, 10, 20, 21, 27, 31, 44, 46, 50, 59, 62, 76, 77, 79, 82, 83, 85, 91, 95, and 96.
158293 is palindromic in (at least) base 73.
158293 in base 4 = 212221111 and consists of only the digits '1' and '2'.

The number 158293 belongs to the following On-Line Encyclopedia of Integer Sequences (OEIS) sequences (among others):

Sequence numbers and descriptions below are taken from OEIS.
A226986: Primes p such that both prevprime(p^2) - 2 and nextprime(p^2) + 2 are also primes.
A267821: Primes whose base-9 representation is a square in base 10.
A298693: G.f. A(x) satisfies: A(x) = Sum_{n>=0} binomial( n*(n+1), n)/(n+1) * x^n / A(x)^( n*(n+1) ).