53213512 has 16 divisors (see below), whose sum is σ = 108846000. Its totient is φ = 24187920.

The previous prime is 53213497. The next prime is 53213543. The reversal of 53213512 is 21531235.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 302262 + ... + 302437.

It is an arithmetic number, because the mean of its divisors is an integer number (6802875).

Almost surely, 2^53213512 is an apocalyptic number.

It is an amenable number.

53213512 is an abundant number, since it is smaller than the sum of its proper divisors (55632488).

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

53213512 is a wasteful number, since it uses less digits than its factorization.

53213512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 604716 (or 604712 counting only the distinct ones).

The product of its digits is 900, while the sum is 22.

The square root of 53213512 is about 7294.7592146691. The cubic root of 53213512 is about 376.1323097062.

Adding to 53213512 its reverse (21531235), we get a palindrome (74744747).

The spelling of 53213512 in words is "fifty-three million, two hundred thirteen thousand, five hundred twelve".