155057157 has 12 divisors (see below), whose sum is σ = 235759680. Its totient is φ = 97930728.

The previous prime is 155057137. The next prime is 155057159. The reversal of 155057157 is 751750551.

155057157 is a `hidden beast` number, since 1 + 550 + 57 + 1 + 57 = 666.

It is not a de Polignac number, because 155057157 - 2¹² = 155053061 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155057159) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 453213 + ... + 453554.

It is an arithmetic number, because the mean of its divisors is an integer number (19646640).

Almost surely, 2^155057157 is an apocalyptic number.

It is an amenable number.

155057157 is a deficient number, since it is larger than the sum of its proper divisors (80702523).

155057157 is a wasteful number, since it uses less digits than its factorization.

155057157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 906792 (or 906789 counting only the distinct ones).

The product of its (nonzero) digits is 30625, while the sum is 36.

The square root of 155057157 is about 12452.1948667695. The cubic root of 155057157 is about 537.2345552123.

The spelling of 155057157 in words is "one hundred fifty-five million, fifty-seven thousand, one hundred fifty-seven".