53315532 has 36 divisors (see below), whose sum is σ = 136039176. Its totient is φ = 17604480.

The previous prime is 53315513. The next prime is 53315579. The reversal of 53315532 is 23551335.

It is a tau number, because it is divible by the number of its divisors (36).

It is a junction number, because it is equal to n+sod(n) for n = 53315496 and 53315505.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3069 + ... + 10772.

It is an arithmetic number, because the mean of its divisors is an integer number (3778866).

Almost surely, 2^53315532 is an apocalyptic number.

It is an amenable number.

53315532 is an abundant number, since it is smaller than the sum of its proper divisors (82723644).

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

53315532 is a wasteful number, since it uses less digits than its factorization.

53315532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13958 (or 13953 counting only the distinct ones).

The product of its digits is 6750, while the sum is 27.

The square root of 53315532 is about 7301.7485577086. The cubic root of 53315532 is about 376.3725276521.

Adding to 53315532 its reverse (23551335), we get a palindrome (76866867).

The spelling of 53315532 in words is "fifty-three million, three hundred fifteen thousand, five hundred thirty-two".