557157766 has 16 divisors (see below), whose sum is σ = 936354960. Its totient is φ = 246408480.

The previous prime is 557157739. The next prime is 557157781. The reversal of 557157766 is 667751755.

It is a super-2 number, since 2×557157766² = 620849552428221512, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 341421 + ... + 343048.

It is an arithmetic number, because the mean of its divisors is an integer number (58522185).

Almost surely, 2^557157766 is an apocalyptic number.

557157766 is a deficient number, since it is larger than the sum of its proper divisors (379197194).

557157766 is a wasteful number, since it uses less digits than its factorization.

557157766 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 684519.

The product of its digits is 1543500, while the sum is 49.

The square root of 557157766 is about 23604.1895857494. The cubic root of 557157766 is about 822.8602110920.

The spelling of 557157766 in words is "five hundred fifty-seven million, one hundred fifty-seven thousand, seven hundred sixty-six".