56666355 has 32 divisors (see below), whose sum is σ = 96422400. Its totient is φ = 28319232.

The previous prime is 56666327. The next prime is 56666359. The reversal of 56666355 is 55366665.

56666355 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 56666355 - 2¹⁰ = 56665331 is a prime.

It is a super-2 number, since 2×56666355² = 6422151577972050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (56666359) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 91236 + ... + 91854.

It is an arithmetic number, because the mean of its divisors is an integer number (3013200).

Almost surely, 2^56666355 is an apocalyptic number.

56666355 is a deficient number, since it is larger than the sum of its proper divisors (39756045).

56666355 is a wasteful number, since it uses less digits than its factorization.

56666355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1003.

The product of its digits is 486000, while the sum is 42.

The square root of 56666355 is about 7527.7058258144. The cubic root of 56666355 is about 384.0977466552.

It can be divided in two parts, 5666 and 6355, that added together give a palindrome (12021).

The spelling of 56666355 in words is "fifty-six million, six hundred sixty-six thousand, three hundred fifty-five".