52370220 has 144 divisors (see below), whose sum is σ = 174666240. Its totient is φ = 11684736.

The previous prime is 52370179. The next prime is 52370231. The reversal of 52370220 is 2207325.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 137991 + ... + 138369.

It is an arithmetic number, because the mean of its divisors is an integer number (1212960).

Almost surely, 2^52370220 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 52370220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87333120).

52370220 is an abundant number, since it is smaller than the sum of its proper divisors (122296020).

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

52370220 is a wasteful number, since it uses less digits than its factorization.

52370220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 452 (or 443 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 21.

The square root of 52370220 is about 7236.7271608096. The cubic root of 52370220 is about 374.1348232306.

Adding to 52370220 its reverse (2207325), we get a palindrome (54577545).

The spelling of 52370220 in words is "fifty-two million, three hundred seventy thousand, two hundred twenty".