53220120 has 32 divisors (see below), whose sum is σ = 159660720. Its totient is φ = 14192000.

The previous prime is 53220119. The next prime is 53220127. The reversal of 53220120 is 2102235.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 53220120.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53220127) 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, 221631 + ... + 221870.

Almost surely, 2^53220120 is an apocalyptic number.

It is an amenable number.

53220120 is an abundant number, since it is smaller than the sum of its proper divisors (106440600).

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

53220120 is a wasteful number, since it uses less digits than its factorization.

53220120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 443515 (or 443511 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 15.

The square root of 53220120 is about 7295.2121285128. The cubic root of 53220120 is about 376.1478783048.

Adding to 53220120 its reverse (2102235), we get a palindrome (55322355).

The spelling of 53220120 in words is "fifty-three million, two hundred twenty thousand, one hundred twenty".