557861472 has 144 divisors (see below), whose sum is σ = 1892887920. Its totient is φ = 159376896.

The previous prime is 557861459. The next prime is 557861561. The reversal of 557861472 is 274168755.

557861472 is a `hidden beast` number, since 5 + 578 + 6 + 1 + 4 + 72 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a super-2 number, since 2×557861472² = 622418843884013568, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 35748 + ... + 48924.

It is an arithmetic number, because the mean of its divisors is an integer number (13145055).

Almost surely, 2^557861472 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 557861472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (946443960).

557861472 is an abundant number, since it is smaller than the sum of its proper divisors (1335026448).

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

557861472 is a wasteful number, since it uses less digits than its factorization.

557861472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13210 (or 13189 counting only the distinct ones).

The product of its digits is 470400, while the sum is 45.

The square root of 557861472 is about 23619.0912610964. The cubic root of 557861472 is about 823.2064972415.

The spelling of 557861472 in words is "five hundred fifty-seven million, eight hundred sixty-one thousand, four hundred seventy-two".