557490 has 16 divisors (see below), whose sum is σ = 1338048. Its totient is φ = 148656.

The previous prime is 557489. The next prime is 557519. The reversal of 557490 is 94755.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 18583 = 557490 / (5 + 5 + 7 + 4 + 9 + 0).

It is a plaindrome in base 13.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9262 + ... + 9321.

It is an arithmetic number, because the mean of its divisors is an integer number (83628).

2⁵⁵⁷⁴⁹⁰ is an apocalyptic number.

557490 is an abundant number, since it is smaller than the sum of its proper divisors (780558).

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

557490 is a wasteful number, since it uses less digits than its factorization.

557490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18593.

The product of its (nonzero) digits is 6300, while the sum is 30.

The square root of 557490 is about 746.6525296281. The cubic root of 557490 is about 82.3023736180.

The spelling of 557490 in words is "five hundred fifty-seven thousand, four hundred ninety".