53081056 has 48 divisors (see below), whose sum is σ = 124637184. Its totient is φ = 21757824.

The previous prime is 53081029. The next prime is 53081081. The reversal of 53081056 is 65018035.

53081056 is a nontrivial binomial coefficient, being equal to C(10304, 2).

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

It is a congruent number.

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, 1 + ... + 10303.

It is an arithmetic number, because the mean of its divisors is an integer number (2596608).

Almost surely, 2^53081056 is an apocalyptic number.

53081056 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

53081056 is the 10303-rd triangular number and also the 5152-nd hexagonal number.

53081056 is the 3435-th centered nonagonal number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 53081056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62318592).

53081056 is an abundant number, since it is smaller than the sum of its proper divisors (71556128).

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

53081056 is a wasteful number, since it uses less digits than its factorization.

53081056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10343 (or 10335 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 53081056 is about 7285.6747113771. The cubic root of 53081056 is about 375.8199681363.

The spelling of 53081056 in words is "fifty-three million, eighty-one thousand, fifty-six".