53722620 has 108 divisors (see below), whose sum is σ = 189595224. Its totient is φ = 12277440.

The previous prime is 53722589. The next prime is 53722621. The reversal of 53722620 is 2622735.

53722620 is a `hidden beast` number, since 5 + 37 + 2 + 2 + 620 = 666.

It is a super-2 number, since 2×53722620² = 5772239799328800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53722621) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 5775 + ... + 11865.

Almost surely, 2^53722620 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 53722620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94797612).

53722620 is an abundant number, since it is smaller than the sum of its proper divisors (135872604).

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

53722620 is a wasteful number, since it uses less digits than its factorization.

53722620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6120 (or 6108 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 27.

The square root of 53722620 is about 7329.5716109470. The cubic root of 53722620 is about 377.3280242344.

The spelling of 53722620 in words is "fifty-three million, seven hundred twenty-two thousand, six hundred twenty".