557438291 has 4 divisors (see below), whose sum is σ = 562957584. Its totient is φ = 551919000.

The previous prime is 557438269. The next prime is 557438303. The reversal of 557438291 is 192834755.

557438291 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 557438291 - 2⁶ = 557438227 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (557438201) 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, 2759495 + ... + 2759696.

It is an arithmetic number, because the mean of its divisors is an integer number (140739396).

Almost surely, 2^557438291 is an apocalyptic number.

557438291 is a deficient number, since it is larger than the sum of its proper divisors (5519293).

557438291 is a wasteful number, since it uses less digits than its factorization.

557438291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5519292.

The product of its digits is 302400, while the sum is 44.

The square root of 557438291 is about 23610.1311093352. The cubic root of 557438291 is about 822.9982893556.

The spelling of 557438291 in words is "five hundred fifty-seven million, four hundred thirty-eight thousand, two hundred ninety-one".