155325857 has 2 divisors, whose sum is σ = 155325858. Its totient is φ = 155325856.

The previous prime is 155325839. The next prime is 155325869. The reversal of 155325857 is 758523551.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 141158161 + 14167696 = 11881^2 + 3764^2 .

It is a cyclic number.

It is not a de Polignac number, because 155325857 - 2¹⁶ = 155260321 is a prime.

It is a super-2 number, since 2×155325857² = 48252243705568898, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (155325757) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77662928 + 77662929.

It is an arithmetic number, because the mean of its divisors is an integer number (77662929).

Almost surely, 2^155325857 is an apocalyptic number.

It is an amenable number.

155325857 is a deficient number, since it is larger than the sum of its proper divisors (1).

155325857 is an equidigital number, since it uses as much as digits as its factorization.

155325857 is an evil number, because the sum of its binary digits is even.

The product of its digits is 210000, while the sum is 41.

The square root of 155325857 is about 12462.9794591823. The cubic root of 155325857 is about 537.5447023935.

The spelling of 155325857 in words is "one hundred fifty-five million, three hundred twenty-five thousand, eight hundred fifty-seven".