557845240 has 32 divisors (see below), whose sum is σ = 1255862880. Its totient is φ = 223011712.

The previous prime is 557845237. The next prime is 557845261. The reversal of 557845240 is 42548755.

It is a super-2 number, since 2×557845240² = 622382623581315200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 557845193 and 557845202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 103902 + ... + 109138.

It is an arithmetic number, because the mean of its divisors is an integer number (39245715).

Almost surely, 2^557845240 is an apocalyptic number.

It is an amenable number.

557845240 is an abundant number, since it is smaller than the sum of its proper divisors (698017640).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

557845240 is a wasteful number, since it uses less digits than its factorization.

557845240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7911 (or 7907 counting only the distinct ones).

The product of its (nonzero) digits is 224000, while the sum is 40.

The square root of 557845240 is about 23618.7476382640. The cubic root of 557845240 is about 823.1985129311.

The spelling of 557845240 in words is "five hundred fifty-seven million, eight hundred forty-five thousand, two hundred forty".