166540052 has 24 divisors (see below), whose sum is σ = 334333440. Its totient is φ = 71105760.

The previous prime is 166540039. The next prime is 166540061. The reversal of 166540052 is 250045661.

166540052 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 166539997 and 166540024.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3524 + ... + 18587.

It is an arithmetic number, because the mean of its divisors is an integer number (13930560).

Almost surely, 2^166540052 is an apocalyptic number.

It is an amenable number.

166540052 is an abundant number, since it is smaller than the sum of its proper divisors (167793388).

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

166540052 is a wasteful number, since it uses less digits than its factorization.

166540052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22391 (or 22389 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 166540052 is about 12905.0397907174. The cubic root of 166540052 is about 550.1818153721.

The spelling of 166540052 in words is "one hundred sixty-six million, five hundred forty thousand, fifty-two".