53302820 has 48 divisors (see below), whose sum is σ = 119242368. Its totient is φ = 19944960.

The previous prime is 53302817. The next prime is 53302831. The reversal of 53302820 is 2820335.

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, 71369 + ... + 72111.

It is an arithmetic number, because the mean of its divisors is an integer number (2484216).

Almost surely, 2^53302820 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 53302820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59621184).

53302820 is an abundant number, since it is smaller than the sum of its proper divisors (65939548).

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

53302820 is a wasteful number, since it uses less digits than its factorization.

53302820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 980 (or 978 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 53302820 is about 7300.8780293880. The cubic root of 53302820 is about 376.3426124929.

The spelling of 53302820 in words is "fifty-three million, three hundred two thousand, eight hundred twenty".