53115512 has 8 divisors (see below), whose sum is σ = 99591600. Its totient is φ = 26557752.

The previous prime is 53115511. The next prime is 53115527. The reversal of 53115512 is 21551135.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53115511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3319712 + ... + 3319727.

It is an arithmetic number, because the mean of its divisors is an integer number (12448950).

Almost surely, 2^53115512 is an apocalyptic number.

It is an amenable number.

53115512 is a deficient number, since it is larger than the sum of its proper divisors (46476088).

53115512 is a wasteful number, since it uses less digits than its factorization.

53115512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6639445 (or 6639441 counting only the distinct ones).

The product of its digits is 750, while the sum is 23.

The square root of 53115512 is about 7288.0389680627. The cubic root of 53115512 is about 375.9012680257.

Adding to 53115512 its reverse (21551135), we get a palindrome (74666647).

The spelling of 53115512 in words is "fifty-three million, one hundred fifteen thousand, five hundred twelve".