52013620 has 12 divisors (see below), whose sum is σ = 109228644. Its totient is φ = 20805440.

The previous prime is 52013609. The next prime is 52013623. The reversal of 52013620 is 2631025.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 18905104 + 33108516 = 4348^2 + 5754^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52013623) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1300321 + ... + 1300360.

It is an arithmetic number, because the mean of its divisors is an integer number (9102387).

Almost surely, 2^52013620 is an apocalyptic number.

It is an amenable number.

52013620 is an abundant number, since it is smaller than the sum of its proper divisors (57215024).

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

52013620 is a wasteful number, since it uses less digits than its factorization.

52013620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2600690 (or 2600688 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 52013620 is about 7212.0468661816. The cubic root of 52013620 is about 373.2837005305.

Adding to 52013620 its reverse (2631025), we get a palindrome (54644645).

The spelling of 52013620 in words is "fifty-two million, thirteen thousand, six hundred twenty".