557181 has 6 divisors (see below), whose sum is σ = 804830. Its totient is φ = 371448.

The previous prime is 557159. The next prime is 557197. The reversal of 557181 is 181755.

It can be written as a sum of positive squares in only one way, i.e., 549081 + 8100 = 741^2 + 90^2 .

It is not a de Polignac number, because 557181 - 2¹⁵ = 524413 is a prime.

It is a super-2 number, since 2×557181² = 620901333522, which contains 22 as substring.

It is a Duffinian number.

557181 is a lucky number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 557181.

It is not an unprimeable number, because it can be changed into a prime (557281) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 30946 + ... + 30963.

2⁵⁵⁷¹⁸¹ is an apocalyptic number.

It is an amenable number.

557181 is a deficient number, since it is larger than the sum of its proper divisors (247649).

557181 is a wasteful number, since it uses less digits than its factorization.

557181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61915 (or 61912 counting only the distinct ones).

The product of its digits is 1400, while the sum is 27.

The square root of 557181 is about 746.4455773866. The cubic root of 557181 is about 82.2871648946.

The spelling of 557181 in words is "five hundred fifty-seven thousand, one hundred eighty-one".