557915945 has 24 divisors (see below), whose sum is σ = 742163904. Its totient is φ = 401789696.

The previous prime is 557915929. The next prime is 557915947. The reversal of 557915945 is 549519755.

It is not a de Polignac number, because 557915945 - 2⁴ = 557915929 is a prime.

It is a super-2 number, since 2×557915945² = 622540403370486050, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 557915893 and 557915902.

It is not an unprimeable number, because it can be changed into a prime (557915947) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24842 + ... + 41628.

It is an arithmetic number, because the mean of its divisors is an integer number (30923496).

Almost surely, 2^557915945 is an apocalyptic number.

It is an amenable number.

557915945 is a deficient number, since it is larger than the sum of its proper divisors (184247959).

557915945 is a wasteful number, since it uses less digits than its factorization.

557915945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16849 (or 16832 counting only the distinct ones).

The product of its digits is 1417500, while the sum is 50.

The square root of 557915945 is about 23620.2443890829. The cubic root of 557915945 is about 823.2332906722.

The spelling of 557915945 in words is "five hundred fifty-seven million, nine hundred fifteen thousand, nine hundred forty-five".