52061540 has 12 divisors (see below), whose sum is σ = 109329276. Its totient is φ = 20824608.

The previous prime is 52061533. The next prime is 52061563. The reversal of 52061540 is 4516025.

It can be written as a sum of positive squares in 2 ways, for example, as 16516096 + 35545444 = 4064^2 + 5962^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1301519 + ... + 1301558.

It is an arithmetic number, because the mean of its divisors is an integer number (9110773).

Almost surely, 2^52061540 is an apocalyptic number.

It is an amenable number.

52061540 is an abundant number, since it is smaller than the sum of its proper divisors (57267736).

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

52061540 is a wasteful number, since it uses less digits than its factorization.

52061540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2603086 (or 2603084 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 52061540 is about 7215.3683204671. The cubic root of 52061540 is about 373.3983004144.

Adding to 52061540 its reverse (4516025), we get a palindrome (56577565).

The spelling of 52061540 in words is "fifty-two million, sixty-one thousand, five hundred forty".