557390 has 16 divisors (see below), whose sum is σ = 1013040. Its totient is φ = 220800.

The previous prime is 557377. The next prime is 557423. The reversal of 557390 is 93755.

It is a super-2 number, since 2×557390² = 621367224200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

557390 is an untouchable number, because it is not equal to the sum of proper divisors of any 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, 1190 + ... + 1590.

It is an arithmetic number, because the mean of its divisors is an integer number (63315).

2⁵⁵⁷³⁹⁰ is an apocalyptic number.

557390 is a deficient number, since it is larger than the sum of its proper divisors (455650).

557390 is a wasteful number, since it uses less digits than its factorization.

557390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 547.

The product of its (nonzero) digits is 4725, while the sum is 29.

The square root of 557390 is about 746.5855610712. The cubic root of 557390 is about 82.2974523163.

The spelling of 557390 in words is "five hundred fifty-seven thousand, three hundred ninety".