556457949 has 12 divisors (see below), whose sum is σ = 803999196. Its totient is φ = 370867392.

The previous prime is 556457917. The next prime is 556457953. The reversal of 556457949 is 949754655.

556457949 is a `hidden beast` number, since 5 + 5 + 64 + 579 + 4 + 9 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 432848025 + 123609924 = 20805^2 + 11118^2 .

It is not a de Polignac number, because 556457949 - 2⁵ = 556457917 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 556457895 and 556457904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (556457999) 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, 38377 + ... + 50849.

It is an arithmetic number, because the mean of its divisors is an integer number (66999933).

Almost surely, 2^556457949 is an apocalyptic number.

It is an amenable number.

556457949 is a deficient number, since it is larger than the sum of its proper divisors (247541247).

556457949 is a wasteful number, since it uses less digits than its factorization.

556457949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17436 (or 17433 counting only the distinct ones).

The product of its digits is 6804000, while the sum is 54.

The square root of 556457949 is about 23589.3609281812. The cubic root of 556457949 is about 822.5155493899.

The spelling of 556457949 in words is "five hundred fifty-six million, four hundred fifty-seven thousand, nine hundred forty-nine".