557105386 has 4 divisors (see below), whose sum is σ = 835658082. Its totient is φ = 278552692.

The previous prime is 557105383. The next prime is 557105407. The reversal of 557105386 is 683501755.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 486864225 + 70241161 = 22065^2 + 8381^2 .

It is a super-2 number, since 2×557105386² = 620732822220417992, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (557105383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 139276345 + ... + 139276348.

Almost surely, 2^557105386 is an apocalyptic number.

557105386 is a deficient number, since it is larger than the sum of its proper divisors (278552696).

557105386 is a wasteful number, since it uses less digits than its factorization.

557105386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278552695.

The product of its (nonzero) digits is 126000, while the sum is 40.

The square root of 557105386 is about 23603.0800108799. The cubic root of 557105386 is about 822.8344238008.

The spelling of 557105386 in words is "five hundred fifty-seven million, one hundred five thousand, three hundred eighty-six".