52513152 has 32 divisors (see below), whose sum is σ = 139489080. Its totient is φ = 17504256.

The previous prime is 52513151. The next prime is 52513183. The reversal of 52513152 is 25131525.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (32).

It is a super-2 number, since 2×52513152² = 5515262265950208, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52513151) 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, 67993 + ... + 68760.

Almost surely, 2^52513152 is an apocalyptic number.

It is an amenable number.

52513152 is an abundant number, since it is smaller than the sum of its proper divisors (86975928).

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

52513152 is a wasteful number, since it uses less digits than its factorization.

52513152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136770 (or 136758 counting only the distinct ones).

The product of its digits is 1500, while the sum is 24.

The square root of 52513152 is about 7246.5958904854. The cubic root of 52513152 is about 374.4748845756.

Adding to 52513152 its reverse (25131525), we get a palindrome (77644677).

The spelling of 52513152 in words is "fifty-two million, five hundred thirteen thousand, one hundred fifty-two".