53621760 has 88 divisors (see below), whose sum is σ = 171554976. Its totient is φ = 14295040.

The previous prime is 53621753. The next prime is 53621767. The reversal of 53621760 is 6712635.

It is an interprime number because it is at equal distance from previous prime (53621753) and next prime (53621767).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53621767) 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, 13615 + ... + 17105.

Almost surely, 2^53621760 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 53621760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85777488).

53621760 is an abundant number, since it is smaller than the sum of its proper divisors (117933216).

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

53621760 is a wasteful number, since it uses less digits than its factorization.

53621760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3519 (or 3501 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 30.

The square root of 53621760 is about 7322.6880310443. The cubic root of 53621760 is about 377.0917417279.

The spelling of 53621760 in words is "fifty-three million, six hundred twenty-one thousand, seven hundred sixty".