166665054 has 32 divisors (see below), whose sum is σ = 339799680. Its totient is φ = 54482400.

The previous prime is 166665043. The next prime is 166665089. The reversal of 166665054 is 450566661.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 240849 + ... + 241539.

It is an arithmetic number, because the mean of its divisors is an integer number (10618740).

Almost surely, 2^166665054 is an apocalyptic number.

166665054 is an abundant number, since it is smaller than the sum of its proper divisors (173134626).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

166665054 is a wasteful number, since it uses less digits than its factorization.

166665054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1416.

The product of its (nonzero) digits is 129600, while the sum is 39.

The square root of 166665054 is about 12909.8820288955. The cubic root of 166665054 is about 550.3194331740.

The spelling of 166665054 in words is "one hundred sixty-six million, six hundred sixty-five thousand, fifty-four".