166624051 has 8 divisors (see below), whose sum is σ = 182057904. Its totient is φ = 151237920.

The previous prime is 166624019. The next prime is 166624057. The reversal of 166624051 is 150426661.

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 166624051 - 2⁵ = 166624019 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (166624057) 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, 4416 + ... + 18781.

It is an arithmetic number, because the mean of its divisors is an integer number (22757238).

Almost surely, 2^166624051 is an apocalyptic number.

166624051 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

166624051 is a deficient number, since it is larger than the sum of its proper divisors (15433853).

166624051 is a wasteful number, since it uses less digits than its factorization.

166624051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23861.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 166624051 is about 12908.2938841661. The cubic root of 166624051 is about 550.2742995405.

The spelling of 166624051 in words is "one hundred sixty-six million, six hundred twenty-four thousand, fifty-one".