56666055 has 16 divisors (see below), whose sum is σ = 93117024. Its totient is φ = 29404800.

The previous prime is 56666053. The next prime is 56666081. The reversal of 56666055 is 55066665.

It is a happy number.

It is not a de Polignac number, because 56666055 - 2¹ = 56666053 is a prime.

It is a super-2 number, since 2×56666055² = 6422083578526050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56666053) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50496 + ... + 51605.

It is an arithmetic number, because the mean of its divisors is an integer number (5819814).

Almost surely, 2^56666055 is an apocalyptic number.

56666055 is a deficient number, since it is larger than the sum of its proper divisors (36450969).

56666055 is a wasteful number, since it uses less digits than its factorization.

56666055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102146.

The product of its (nonzero) digits is 162000, while the sum is 39.

The square root of 56666055 is about 7527.6858993983. The cubic root of 56666055 is about 384.0970688308.

The spelling of 56666055 in words is "fifty-six million, six hundred sixty-six thousand, fifty-five".