53356220 has 24 divisors (see below), whose sum is σ = 115077984. Its totient is φ = 20765376.

The previous prime is 53356181. The next prime is 53356223. The reversal of 53356220 is 2265335.

It is a self number, because there is not a number n which added to its sum of digits gives 53356220.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53356223) 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, 35312 + ... + 36791.

It is an arithmetic number, because the mean of its divisors is an integer number (4794916).

Almost surely, 2^53356220 is an apocalyptic number.

It is an amenable number.

53356220 is an abundant number, since it is smaller than the sum of its proper divisors (61721764).

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

53356220 is a wasteful number, since it uses less digits than its factorization.

53356220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72149 (or 72147 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 26.

The square root of 53356220 is about 7304.5342082846. The cubic root of 53356220 is about 376.4682467972.

The spelling of 53356220 in words is "fifty-three million, three hundred fifty-six thousand, two hundred twenty".