53251524 has 18 divisors (see below), whose sum is σ = 134608110. Its totient is φ = 17750496.

The previous prime is 53251519. The next prime is 53251567. The reversal of 53251524 is 42515235.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 49449024 + 3802500 = 7032^2 + 1950^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-4 number, since 4×53251524⁴ (a number of 32 digits) contains 4444 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 739569 + ... + 739640.

Almost surely, 2^53251524 is an apocalyptic number.

It is an amenable number.

53251524 is an abundant number, since it is smaller than the sum of its proper divisors (81356586).

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

53251524 is a wasteful number, since it uses less digits than its factorization.

53251524 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1479219 (or 1479214 counting only the distinct ones).

The product of its digits is 6000, while the sum is 27.

The square root of 53251524 is about 7297.3641816755. The cubic root of 53251524 is about 376.2218492347.

Adding to 53251524 its reverse (42515235), we get a palindrome (95766759).

The spelling of 53251524 in words is "fifty-three million, two hundred fifty-one thousand, five hundred twenty-four".