52161666 has 32 divisors (see below), whose sum is σ = 107435328. Its totient is φ = 16873920.

The previous prime is 52161647. The next prime is 52161667. The reversal of 52161666 is 66616125.

52161666 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (52161667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46140 + ... + 47256.

It is an arithmetic number, because the mean of its divisors is an integer number (3357354).

Almost surely, 2^52161666 is an apocalyptic number.

52161666 is an abundant number, since it is smaller than the sum of its proper divisors (55273662).

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

52161666 is a wasteful number, since it uses less digits than its factorization.

52161666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1346.

The product of its digits is 12960, while the sum is 33.

The square root of 52161666 is about 7222.3033721937. The cubic root of 52161666 is about 373.6375233034.

The spelling of 52161666 in words is "fifty-two million, one hundred sixty-one thousand, six hundred sixty-six".