156922057 has 2 divisors, whose sum is σ = 156922058. Its totient is φ = 156922056.

The previous prime is 156922039. The next prime is 156922067. The reversal of 156922057 is 750229651.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 87965641 + 68956416 = 9379^2 + 8304^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-156922057 is a prime.

It is a super-2 number, since 2×156922057² = 49249063946222498, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (156922037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78461028 + 78461029.

It is an arithmetic number, because the mean of its divisors is an integer number (78461029).

Almost surely, 2^156922057 is an apocalyptic number.

It is an amenable number.

156922057 is a deficient number, since it is larger than the sum of its proper divisors (1).

156922057 is an equidigital number, since it uses as much as digits as its factorization.

156922057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 37800, while the sum is 37.

The square root of 156922057 is about 12526.8534357196. The cubic root of 156922057 is about 539.3797828925.

The spelling of 156922057 in words is "one hundred fifty-six million, nine hundred twenty-two thousand, fifty-seven".