52166220 has 24 divisors (see below), whose sum is σ = 146065584. Its totient is φ = 13910976.

The previous prime is 52166209. The next prime is 52166221. The reversal of 52166220 is 2266125.

It is not an unprimeable number, because it can be changed into a prime (52166221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 434659 + ... + 434778.

It is an arithmetic number, because the mean of its divisors is an integer number (6086066).

Almost surely, 2^52166220 is an apocalyptic number.

It is an amenable number.

52166220 is an abundant number, since it is smaller than the sum of its proper divisors (93899364).

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

52166220 is a wasteful number, since it uses less digits than its factorization.

52166220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 869449 (or 869447 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 52166220 is about 7222.6186386933. The cubic root of 52166220 is about 373.6483965231.

The spelling of 52166220 in words is "fifty-two million, one hundred sixty-six thousand, two hundred twenty".