157532157 has 6 divisors (see below), whose sum is σ = 227546462. Its totient is φ = 105021432.

The previous prime is 157532153. The next prime is 157532159. The reversal of 157532157 is 751235751.

It is a happy number.

157532157 is a `hidden beast` number, since 1 + 575 + 32 + 1 + 57 = 666.

It can be written as a sum of positive squares in only one way, i.e., 157477401 + 54756 = 12549^2 + 234^2 .

It is not a de Polignac number, because 157532157 - 2² = 157532153 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 (157532153) 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, 8751778 + ... + 8751795.

Almost surely, 2^157532157 is an apocalyptic number.

It is an amenable number.

157532157 is a deficient number, since it is larger than the sum of its proper divisors (70014305).

157532157 is a wasteful number, since it uses less digits than its factorization.

157532157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17503579 (or 17503576 counting only the distinct ones).

The product of its digits is 36750, while the sum is 36.

The square root of 157532157 is about 12551.1814981698. The cubic root of 157532157 is about 540.0779002842.

The spelling of 157532157 in words is "one hundred fifty-seven million, five hundred thirty-two thousand, one hundred fifty-seven".