56166199 has 2 divisors, whose sum is σ = 56166200. Its totient is φ = 56166198.

The previous prime is 56166193. The next prime is 56166211. The reversal of 56166199 is 99166165.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 56166199 - 2¹⁵ = 56133431 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56166193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28083099 + 28083100.

It is an arithmetic number, because the mean of its divisors is an integer number (28083100).

Almost surely, 2^56166199 is an apocalyptic number.

56166199 is a deficient number, since it is larger than the sum of its proper divisors (1).

56166199 is an equidigital number, since it uses as much as digits as its factorization.

56166199 is an evil number, because the sum of its binary digits is even.

The product of its digits is 87480, while the sum is 43.

The square root of 56166199 is about 7494.4111843426. The cubic root of 56166199 is about 382.9643475642.

It can be divided in two parts, 56166 and 199, that added together give a palindrome (56365).

The spelling of 56166199 in words is "fifty-six million, one hundred sixty-six thousand, one hundred ninety-nine".