557201581 has 4 divisors (see below), whose sum is σ = 586528000. Its totient is φ = 527875164.

The previous prime is 557201507. The next prime is 557201609. The reversal of 557201581 is 185102755.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 557201581 - 2⁹ = 557201069 is a prime.

It is a super-2 number, since 2×557201581² = 620947203737799122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (557201081) 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, 14663181 + ... + 14663218.

It is an arithmetic number, because the mean of its divisors is an integer number (146632000).

Almost surely, 2^557201581 is an apocalyptic number.

It is an amenable number.

557201581 is a deficient number, since it is larger than the sum of its proper divisors (29326419).

557201581 is a wasteful number, since it uses less digits than its factorization.

557201581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29326418.

The product of its (nonzero) digits is 14000, while the sum is 34.

The square root of 557201581 is about 23605.1176866374. The cubic root of 557201581 is about 822.8817804913.

The spelling of 557201581 in words is "five hundred fifty-seven million, two hundred one thousand, five hundred eighty-one".