52315020 has 72 divisors (see below), whose sum is σ = 159279120. Its totient is φ = 13898880.

The previous prime is 52315009. The next prime is 52315033. The reversal of 52315020 is 2051325.

It is a happy number.

It is a super-2 number, since 2×52315020² = 5473722635200800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 52314984 and 52315002.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 91335 + ... + 91905.

It is an arithmetic number, because the mean of its divisors is an integer number (2212210).

Almost surely, 2^52315020 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 52315020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79639560).

52315020 is an abundant number, since it is smaller than the sum of its proper divisors (106964100).

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

52315020 is a wasteful number, since it uses less digits than its factorization.

52315020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1095 (or 1090 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 18.

The square root of 52315020 is about 7232.9122765315. The cubic root of 52315020 is about 374.0033267265.

Adding to 52315020 its reverse (2051325), we get a palindrome (54366345).

The spelling of 52315020 in words is "fifty-two million, three hundred fifteen thousand, twenty".