5577561 has 24 divisors (see below), whose sum is σ = 8963136. Its totient is φ = 3313440.

The previous prime is 5577529. The next prime is 5577577. The reversal of 5577561 is 1657755.

It is not a de Polignac number, because 5577561 - 2⁵ = 5577529 is a prime.

It is a super-2 number, since 2×5577561² = 62218373417442, which contains 22 as substring.

5577561 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (5577521) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4716 + ... + 5778.

It is an arithmetic number, because the mean of its divisors is an integer number (373464).

Almost surely, 2^5577561 is an apocalyptic number.

It is an amenable number.

5577561 is a deficient number, since it is larger than the sum of its proper divisors (3385575).

5577561 is a wasteful number, since it uses less digits than its factorization.

5577561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1133 (or 1130 counting only the distinct ones).

The product of its digits is 36750, while the sum is 36.

The square root of 5577561 is about 2361.6860502615. The cubic root of 5577561 is about 177.3432962003.

It can be divided in two parts, 557 and 7561, that added together give a palindrome (8118).

The spelling of 5577561 in words is "five million, five hundred seventy-seven thousand, five hundred sixty-one".