157635081 has 6 divisors (see below), whose sum is σ = 227695130. Its totient is φ = 105090048.

The previous prime is 157635073. The next prime is 157635083. The reversal of 157635081 is 180536751.

157635081 is a `hidden beast` number, since 1 + 576 + 3 + 5 + 0 + 81 = 666.

It can be written as a sum of positive squares in only one way, i.e., 157628025 + 7056 = 12555^2 + 84^2 .

It is not a de Polignac number, because 157635081 - 2³ = 157635073 is a prime.

It is a super-2 number, since 2×157635081² = 49697637523753122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (157635083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8757496 + ... + 8757513.

Almost surely, 2^157635081 is an apocalyptic number.

It is an amenable number.

157635081 is a deficient number, since it is larger than the sum of its proper divisors (70060049).

157635081 is a wasteful number, since it uses less digits than its factorization.

157635081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17515015 (or 17515012 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 36.

The square root of 157635081 is about 12555.2810004396. The cubic root of 157635081 is about 540.1954950604.

The spelling of 157635081 in words is "one hundred fifty-seven million, six hundred thirty-five thousand, eighty-one".