8557874137 has 4 divisors (see below), whose sum is σ = 9061278516. Its totient is φ = 8054469760.

The previous prime is 8557874131. The next prime is 8557874173. The reversal of 8557874137 is 7314787558.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6495715216 + 2062158921 = 80596^2 + 45411^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8557874137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8557874131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 251702164 + ... + 251702197.

It is an arithmetic number, because the mean of its divisors is an integer number (2265319629).

Almost surely, 2^8557874137 is an apocalyptic number.

It is an amenable number.

8557874137 is a deficient number, since it is larger than the sum of its proper divisors (503404379).

8557874137 is a wasteful number, since it uses less digits than its factorization.

8557874137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 503404378.

The product of its digits is 6585600, while the sum is 55.

The square root of 8557874137 is about 92508.7787023480. The cubic root of 8557874137 is about 2045.4488874574.

The spelling of 8557874137 in words is "eight billion, five hundred fifty-seven million, eight hundred seventy-four thousand, one hundred thirty-seven".