53215256 has 8 divisors (see below), whose sum is σ = 99778620. Its totient is φ = 26607624.

The previous prime is 53215247. The next prime is 53215271. The reversal of 53215256 is 65251235.

It is a happy number.

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

It is a super-2 number, since 2×53215256² = 5663726942291072, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3325946 + ... + 3325961.

Almost surely, 2^53215256 is an apocalyptic number.

It is an amenable number.

53215256 is a deficient number, since it is larger than the sum of its proper divisors (46563364).

53215256 is a wasteful number, since it uses less digits than its factorization.

53215256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6651913 (or 6651909 counting only the distinct ones).

The product of its digits is 9000, while the sum is 29.

The square root of 53215256 is about 7294.8787515626. The cubic root of 53215256 is about 376.1364187351.

The spelling of 53215256 in words is "fifty-three million, two hundred fifteen thousand, two hundred fifty-six".