166056051 has 24 divisors (see below), whose sum is σ = 272710800. Its totient is φ = 89306112.

The previous prime is 166056043. The next prime is 166056053. The reversal of 166056051 is 150650661.

It is not a de Polignac number, because 166056051 - 2³ = 166056043 is a prime.

It is a super-2 number, since 2×166056051² = 55149224147429202, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (166056053) 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, 30726 + ... + 35723.

It is an arithmetic number, because the mean of its divisors is an integer number (11362950).

Almost surely, 2^166056051 is an apocalyptic number.

166056051 is a deficient number, since it is larger than the sum of its proper divisors (106654749).

166056051 is a wasteful number, since it uses less digits than its factorization.

166056051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66483 (or 66476 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 30.

The square root of 166056051 is about 12886.2737437942. The cubic root of 166056051 is about 549.6483162193.

The spelling of 166056051 in words is "one hundred sixty-six million, fifty-six thousand, fifty-one".