557574021 has 12 divisors (see below), whose sum is σ = 815580480. Its totient is φ = 367010280.

The previous prime is 557574011. The next prime is 557574023. The reversal of 557574021 is 120475755.

It is not a de Polignac number, because 557574021 - 2⁹ = 557573509 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (557574023) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 391395 + ... + 392816.

It is an arithmetic number, because the mean of its divisors is an integer number (67965040).

Almost surely, 2^557574021 is an apocalyptic number.

It is an amenable number.

557574021 is a deficient number, since it is larger than the sum of its proper divisors (258006459).

557574021 is a wasteful number, since it uses less digits than its factorization.

557574021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 784296 (or 784293 counting only the distinct ones).

The product of its (nonzero) digits is 49000, while the sum is 36.

The square root of 557574021 is about 23613.0053360431. The cubic root of 557574021 is about 823.0650808997.

The spelling of 557574021 in words is "five hundred fifty-seven million, five hundred seventy-four thousand, twenty-one".