53021256 has 32 divisors (see below), whose sum is σ = 138317760. Its totient is φ = 16905152.

The previous prime is 53021239. The next prime is 53021291. The reversal of 53021256 is 65212035.

It is a super-2 number, since 2×53021256² = 5622507175635072, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47475 + ... + 48578.

It is an arithmetic number, because the mean of its divisors is an integer number (4322430).

Almost surely, 2^53021256 is an apocalyptic number.

It is an amenable number.

53021256 is an abundant number, since it is smaller than the sum of its proper divisors (85296504).

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

53021256 is a wasteful number, since it uses less digits than its factorization.

53021256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96085 (or 96081 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 53021256 is about 7281.5696110111. The cubic root of 53021256 is about 375.6787848173.

The spelling of 53021256 in words is "fifty-three million, twenty-one thousand, two hundred fifty-six".