557720319 has 32 divisors (see below), whose sum is σ = 844945920. Its totient is φ = 324390528.

The previous prime is 557720299. The next prime is 557720321. The reversal of 557720319 is 913027755.

It is not a de Polignac number, because 557720319 - 2⁸ = 557720063 is a prime.

It is a super-2 number, since 2×557720319² = 622103908450923522, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (557720389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 550057 + ... + 551069.

It is an arithmetic number, because the mean of its divisors is an integer number (26404560).

Almost surely, 2^557720319 is an apocalyptic number.

557720319 is a deficient number, since it is larger than the sum of its proper divisors (287225601).

557720319 is a wasteful number, since it uses less digits than its factorization.

557720319 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1791.

The product of its (nonzero) digits is 66150, while the sum is 39.

The square root of 557720319 is about 23616.1029596333. The cubic root of 557720319 is about 823.1370607271.

The spelling of 557720319 in words is "five hundred fifty-seven million, seven hundred twenty thousand, three hundred nineteen".