557406049 has 4 divisors (see below), whose sum is σ = 560956564. Its totient is φ = 553855536.

The previous prime is 557406043. The next prime is 557406089. The reversal of 557406049 is 940604755.

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

It can be written as a sum of positive squares in 2 ways, for example, as 156125025 + 401281024 = 12495^2 + 20032^2 .

It is a cyclic number.

It is not a de Polignac number, because 557406049 - 2²⁷ = 423188321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (557406043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1775022 + ... + 1775335.

It is an arithmetic number, because the mean of its divisors is an integer number (140239141).

Almost surely, 2^557406049 is an apocalyptic number.

It is an amenable number.

557406049 is a deficient number, since it is larger than the sum of its proper divisors (3550515).

557406049 is a wasteful number, since it uses less digits than its factorization.

557406049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3550514.

The product of its (nonzero) digits is 151200, while the sum is 40.

The square root of 557406049 is about 23609.4482993568. The cubic root of 557406049 is about 822.9824217562.

The spelling of 557406049 in words is "five hundred fifty-seven million, four hundred six thousand, forty-nine".