52015620 has 24 divisors (see below), whose sum is σ = 145643904. Its totient is φ = 13870816.

The previous prime is 52015591. The next prime is 52015637. The reversal of 52015620 is 2651025.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 433404 + ... + 433523.

It is an arithmetic number, because the mean of its divisors is an integer number (6068496).

Almost surely, 2^52015620 is an apocalyptic number.

It is an amenable number.

52015620 is an abundant number, since it is smaller than the sum of its proper divisors (93628284).

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

52015620 is a wasteful number, since it uses less digits than its factorization.

52015620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 866939 (or 866937 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 52015620 is about 7212.1855217403. The cubic root of 52015620 is about 373.2884849045.

Adding to 52015620 its reverse (2651025), we get a palindrome (54666645).

The spelling of 52015620 in words is "fifty-two million, fifteen thousand, six hundred twenty".