166605052 has 12 divisors (see below), whose sum is σ = 292186440. Its totient is φ = 83123216.

The previous prime is 166605037. The next prime is 166605059. The reversal of 166605052 is 250506661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166605059) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42727 + ... + 46462.

It is an arithmetic number, because the mean of its divisors is an integer number (24348870).

Almost surely, 2^166605052 is an apocalyptic number.

It is an amenable number.

166605052 is a deficient number, since it is larger than the sum of its proper divisors (125581388).

166605052 is a wasteful number, since it uses less digits than its factorization.

166605052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89660 (or 89658 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 31.

The square root of 166605052 is about 12907.5579409895. The cubic root of 166605052 is about 550.2533840749.

It can be divided in two parts, 16660 and 5052, that added together give a palindrome (21712).

The spelling of 166605052 in words is "one hundred sixty-six million, six hundred five thousand, fifty-two".