155158957 has 2 divisors, whose sum is σ = 155158958. Its totient is φ = 155158956.

The previous prime is 155158909. The next prime is 155158987. The reversal of 155158957 is 759851551.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 104734756 + 50424201 = 10234^2 + 7101^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-155158957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (155158987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77579478 + 77579479.

It is an arithmetic number, because the mean of its divisors is an integer number (77579479).

Almost surely, 2^155158957 is an apocalyptic number.

It is an amenable number.

155158957 is a deficient number, since it is larger than the sum of its proper divisors (1).

155158957 is an equidigital number, since it uses as much as digits as its factorization.

155158957 is an evil number, because the sum of its binary digits is even.

The product of its digits is 315000, while the sum is 46.

The square root of 155158957 is about 12456.2818288605. The cubic root of 155158957 is about 537.3521000680.

The spelling of 155158957 in words is "one hundred fifty-five million, one hundred fifty-eight thousand, nine hundred fifty-seven".