49564557 has 12 divisors (see below), whose sum is σ = 81820960. Its totient is φ = 28322568.

The previous prime is 49564553. The next prime is 49564579. The reversal of 49564557 is 75546594.

49564557 is a `hidden beast` number, since 4 + 95 + 6 + 4 + 557 = 666.

It is not a de Polignac number, because 49564557 - 2² = 49564553 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 (49564553) 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, 393307 + ... + 393432.

Almost surely, 2^49564557 is an apocalyptic number.

It is an amenable number.

49564557 is a deficient number, since it is larger than the sum of its proper divisors (32256403).

49564557 is a wasteful number, since it uses less digits than its factorization.

49564557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 786752 (or 786749 counting only the distinct ones).

The product of its digits is 756000, while the sum is 45.

The square root of 49564557 is about 7040.2100110721. The cubic root of 49564557 is about 367.3305730194.

The spelling of 49564557 in words is "forty-nine million, five hundred sixty-four thousand, five hundred fifty-seven".