5665557 has 8 divisors (see below), whose sum is σ = 7565184. Its totient is φ = 3771488.

The previous prime is 5665549. The next prime is 5665559. The reversal of 5665557 is 7555665.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 5665557 - 2³ = 5665549 is a prime.

It is a super-2 number, since 2×5665557² = 64197072240498, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5665559) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2788 + ... + 4370.

It is an arithmetic number, because the mean of its divisors is an integer number (945648).

Almost surely, 2^5665557 is an apocalyptic number.

It is an amenable number.

5665557 is a deficient number, since it is larger than the sum of its proper divisors (1899627).

5665557 is a wasteful number, since it uses less digits than its factorization.

5665557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2779.

The product of its digits is 157500, while the sum is 39.

The square root of 5665557 is about 2380.2430548160. The cubic root of 5665557 is about 178.2710699652.

The spelling of 5665557 in words is "five million, six hundred sixty-five thousand, five hundred fifty-seven".