557855424 has 140 divisors (see below), whose sum is σ = 1890018064. Its totient is φ = 159376896.

The previous prime is 557855423. The next prime is 557855461. The reversal of 557855424 is 424558755.

557855424 is a `hidden beast` number, since 5 + 5 + 78 + 554 + 24 = 666.

It is a super-2 number, since 2×557855424² = 622405348172439552, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 557855424.

It is not an unprimeable number, because it can be changed into a prime (557855423) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 28602 + ... + 43974.

Almost surely, 2^557855424 is an apocalyptic number.

557855424 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 557855424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (945009032).

557855424 is an abundant number, since it is smaller than the sum of its proper divisors (1332162640).

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

557855424 is a wasteful number, since it uses less digits than its factorization.

557855424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15404 (or 15385 counting only the distinct ones).

The product of its digits is 1120000, while the sum is 45.

The square root of 557855424 is about 23618.9632287279. The cubic root of 557855424 is about 823.2035223268.

The spelling of 557855424 in words is "five hundred fifty-seven million, eight hundred fifty-five thousand, four hundred twenty-four".