557131530 has 64 divisors (see below), whose sum is σ = 1398435840. Its totient is φ = 141784896.

The previous prime is 557131517. The next prime is 557131567. The reversal of 557131530 is 35131755.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 495549 + ... + 496671.

It is an arithmetic number, because the mean of its divisors is an integer number (21850560).

Almost surely, 2^557131530 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 557131530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (699217920).

557131530 is an abundant number, since it is smaller than the sum of its proper divisors (841304310).

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

557131530 is a wasteful number, since it uses less digits than its factorization.

557131530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1875.

The product of its (nonzero) digits is 7875, while the sum is 30.

The square root of 557131530 is about 23603.6338304084. The cubic root of 557131530 is about 822.8472950021.

The spelling of 557131530 in words is "five hundred fifty-seven million, one hundred thirty-one thousand, five hundred thirty".