53421256 has 32 divisors (see below), whose sum is σ = 114756480. Its totient is φ = 22838400.

The previous prime is 53421253. The next prime is 53421283. The reversal of 53421256 is 65212435.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is not an unprimeable number, because it can be changed into a prime (53421253) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28261 + ... + 30091.

It is an arithmetic number, because the mean of its divisors is an integer number (3586140).

Almost surely, 2^53421256 is an apocalyptic number.

53421256 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

53421256 is an abundant number, since it is smaller than the sum of its proper divisors (61335224).

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

53421256 is a wasteful number, since it uses less digits than its factorization.

53421256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2365 (or 2361 counting only the distinct ones).

The product of its digits is 7200, while the sum is 28.

The square root of 53421256 is about 7308.9846080013. The cubic root of 53421256 is about 376.6211439838.

The spelling of 53421256 in words is "fifty-three million, four hundred twenty-one thousand, two hundred fifty-six".