53036640 has 96 divisors (see below), whose sum is σ = 185643360. Its totient is φ = 14141952.

The previous prime is 53036603. The next prime is 53036653. The reversal of 53036640 is 4663035.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1819 + ... + 10458.

It is an arithmetic number, because the mean of its divisors is an integer number (1933785).

Almost surely, 2^53036640 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 53036640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92821680).

53036640 is an abundant number, since it is smaller than the sum of its proper divisors (132606720).

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

53036640 is a wasteful number, since it uses less digits than its factorization.

53036640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12301 (or 12287 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 27.

The square root of 53036640 is about 7282.6259000446. The cubic root of 53036640 is about 375.7151154263.

Adding to 53036640 its reverse (4663035), we get a palindrome (57699675).

The spelling of 53036640 in words is "fifty-three million, thirty-six thousand, six hundred forty".