157561677 has 24 divisors (see below), whose sum is σ = 280111104. Its totient is φ = 83109024.

The previous prime is 157561603. The next prime is 157561681. The reversal of 157561677 is 776165751.

157561677 is a `hidden beast` number, since 1 + 575 + 6 + 1 + 6 + 77 = 666.

It is not a de Polignac number, because 157561677 - 2⁷ = 157561549 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157561687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 95373 + ... + 97010.

It is an arithmetic number, because the mean of its divisors is an integer number (11671296).

Almost surely, 2^157561677 is an apocalyptic number.

It is an amenable number.

157561677 is a deficient number, since it is larger than the sum of its proper divisors (122549427).

157561677 is a wasteful number, since it uses less digits than its factorization.

157561677 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192409 (or 192406 counting only the distinct ones).

The product of its digits is 308700, while the sum is 45.

The square root of 157561677 is about 12552.3574279894. The cubic root of 157561677 is about 540.1116332992. Note that the first 3 decimals are identical.

The spelling of 157561677 in words is "one hundred fifty-seven million, five hundred sixty-one thousand, six hundred seventy-seven".