52163220 has 48 divisors (see below), whose sum is σ = 146418048. Its totient is φ = 13875840.

The previous prime is 52163213. The next prime is 52163231. The reversal of 52163220 is 2236125.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31657 + ... + 33263.

It is an arithmetic number, because the mean of its divisors is an integer number (3050376).

Almost surely, 2^52163220 is an apocalyptic number.

It is an amenable number.

52163220 is an abundant number, since it is smaller than the sum of its proper divisors (94254828).

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

52163220 is a wasteful number, since it uses less digits than its factorization.

52163220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2160 (or 2158 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 52163220 is about 7222.4109547990. The cubic root of 52163220 is about 373.6412337354.

Adding to 52163220 its reverse (2236125), we get a palindrome (54399345).

The spelling of 52163220 in words is "fifty-two million, one hundred sixty-three thousand, two hundred twenty".