557881505 has 4 divisors (see below), whose sum is σ = 669457812. Its totient is φ = 446305200.

The previous prime is 557881483. The next prime is 557881507. The reversal of 557881505 is 505188755.

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 279792529 + 278088976 = 16727^2 + 16676^2 .

It is a de Polignac number, because none of the positive numbers 2^k-557881505 is a prime.

It is a super-2 number, since 2×557881505² = 622463547242130050, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (557881507) 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, 55788146 + ... + 55788155.

It is an arithmetic number, because the mean of its divisors is an integer number (167364453).

Almost surely, 2^557881505 is an apocalyptic number.

It is an amenable number.

557881505 is a deficient number, since it is larger than the sum of its proper divisors (111576307).

557881505 is a wasteful number, since it uses less digits than its factorization.

557881505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111576306.

The product of its (nonzero) digits is 280000, while the sum is 44.

The square root of 557881505 is about 23619.5153421911. The cubic root of 557881505 is about 823.2163510010.

The spelling of 557881505 in words is "five hundred fifty-seven million, eight hundred eighty-one thousand, five hundred five".