52137530 has 16 divisors (see below), whose sum is σ = 94072104. Its totient is φ = 20805120.

The previous prime is 52137517. The next prime is 52137571. The reversal of 52137530 is 3573125.

It can be written as a sum of positive squares in 4 ways, for example, as 34656769 + 17480761 = 5887^2 + 4181^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 52137530.

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, 1691 + ... + 10350.

Almost surely, 2^52137530 is an apocalyptic number.

52137530 is a deficient number, since it is larger than the sum of its proper divisors (41934574).

52137530 is a wasteful number, since it uses less digits than its factorization.

52137530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12481.

The product of its (nonzero) digits is 3150, while the sum is 26.

The square root of 52137530 is about 7220.6322437859. The cubic root of 52137530 is about 373.5798851485.

The spelling of 52137530 in words is "fifty-two million, one hundred thirty-seven thousand, five hundred thirty".