155966157 has 6 divisors (see below), whose sum is σ = 225284462. Its totient is φ = 103977432.

The previous prime is 155966141. The next prime is 155966171. The reversal of 155966157 is 751669551.

155966157 is a `hidden beast` number, since 1 + 5 + 596 + 6 + 1 + 57 = 666.

It can be written as a sum of positive squares in only one way, i.e., 82246761 + 73719396 = 9069^2 + 8586^2 .

It is not a de Polignac number, because 155966157 - 2⁴ = 155966141 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155968157) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8664778 + ... + 8664795.

Almost surely, 2^155966157 is an apocalyptic number.

It is an amenable number.

155966157 is a deficient number, since it is larger than the sum of its proper divisors (69318305).

155966157 is a wasteful number, since it uses less digits than its factorization.

155966157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17329579 (or 17329576 counting only the distinct ones).

The product of its digits is 283500, while the sum is 45.

The square root of 155966157 is about 12488.6411190329. The cubic root of 155966157 is about 538.2823301744.

The spelling of 155966157 in words is "one hundred fifty-five million, nine hundred sixty-six thousand, one hundred fifty-seven".