155792969 has 2 divisors, whose sum is σ = 155792970. Its totient is φ = 155792968.

The previous prime is 155792953. The next prime is 155792971. The reversal of 155792969 is 969297551.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 133702969 + 22090000 = 11563^2 + 4700^2 .

It is a cyclic number.

It is not a de Polignac number, because 155792969 - 2⁴ = 155792953 is a prime.

It is a super-2 number, since 2×155792969² = 48542898379669922, which contains 22 as substring.

Together with 155792971, it forms a pair of twin primes.

It is a Chen prime.

It is a zygodrome in base 8.

It is a self number, because there is not a number n which added to its sum of digits gives 155792969.

It is not a weakly prime, because it can be changed into another prime (155792269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77896484 + 77896485.

It is an arithmetic number, because the mean of its divisors is an integer number (77896485).

Almost surely, 2^155792969 is an apocalyptic number.

It is an amenable number.

155792969 is a deficient number, since it is larger than the sum of its proper divisors (1).

155792969 is an equidigital number, since it uses as much as digits as its factorization.

155792969 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1530900, while the sum is 53.

The square root of 155792969 is about 12481.7053722638. The cubic root of 155792969 is about 538.0830164916.

The spelling of 155792969 in words is "one hundred fifty-five million, seven hundred ninety-two thousand, nine hundred sixty-nine".