53021056 has 32 divisors (see below), whose sum is σ = 115233480. Its totient is φ = 24099840.

The previous prime is 53021009. The next prime is 53021081. The reversal of 53021056 is 65012035.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (32).

It is a super-2 number, since 2×53021056² = 5622464758710272, which contains 22 as substring.

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

It is a congruent number.

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, 17421 + ... + 20236.

Almost surely, 2^53021056 is an apocalyptic number.

It is an amenable number.

53021056 is an abundant number, since it is smaller than the sum of its proper divisors (62212424).

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

53021056 is a wasteful number, since it uses less digits than its factorization.

53021056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37682 (or 37670 counting only the distinct ones).

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

The square root of 53021056 is about 7281.5558776954. Note that the first 3 decimals coincide. The cubic root of 53021056 is about 375.6783124543.

The spelling of 53021056 in words is "fifty-three million, twenty-one thousand, fifty-six".