166121052 has 12 divisors (see below), whose sum is σ = 387615816. Its totient is φ = 55373680.

The previous prime is 166121041. The next prime is 166121069. The reversal of 166121052 is 250121661.

166121052 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6921699 + ... + 6921722.

It is an arithmetic number, because the mean of its divisors is an integer number (32301318).

Almost surely, 2^166121052 is an apocalyptic number.

166121052 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

166121052 is an abundant number, since it is smaller than the sum of its proper divisors (221494764).

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

166121052 is a wasteful number, since it uses less digits than its factorization.

166121052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13843428 (or 13843426 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 24.

The square root of 166121052 is about 12888.7955992792. The cubic root of 166121052 is about 549.7200249973.

The spelling of 166121052 in words is "one hundred sixty-six million, one hundred twenty-one thousand, fifty-two".