53507736 has 128 divisors (see below), whose sum is σ = 157132800. Its totient is φ = 16848000.

The previous prime is 53507731. The next prime is 53507737. The reversal of 53507736 is 63770535.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 53507736.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53507731) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 408391 + ... + 408521.

It is an arithmetic number, because the mean of its divisors is an integer number (1227600).

Almost surely, 2^53507736 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 53507736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78566400).

53507736 is an abundant number, since it is smaller than the sum of its proper divisors (103625064).

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

53507736 is a wasteful number, since it uses less digits than its factorization.

53507736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238 (or 228 counting only the distinct ones).

The product of its (nonzero) digits is 66150, while the sum is 36.

The square root of 53507736 is about 7314.8982221218. The cubic root of 53507736 is about 376.8242631137.

The spelling of 53507736 in words is "fifty-three million, five hundred seven thousand, seven hundred thirty-six".