53253820 has 48 divisors (see below), whose sum is σ = 115210368. Its totient is φ = 20666880.

The previous prime is 53253791. The next prime is 53253839. The reversal of 53253820 is 2835235.

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, 169984 + ... + 170296.

It is an arithmetic number, because the mean of its divisors is an integer number (2400216).

Almost surely, 2^53253820 is an apocalyptic number.

It is an amenable number.

53253820 is an abundant number, since it is smaller than the sum of its proper divisors (61956548).

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

53253820 is a wasteful number, since it uses less digits than its factorization.

53253820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 550 (or 548 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 53253820 is about 7297.5214970564. The cubic root of 53253820 is about 376.2272562346.

The spelling of 53253820 in words is "fifty-three million, two hundred fifty-three thousand, eight hundred twenty".