53275720 has 64 divisors (see below), whose sum is σ = 123477120. Its totient is φ = 20680704.

The previous prime is 53275711. The next prime is 53275727. The reversal of 53275720 is 2757235.

It is not an unprimeable number, because it can be changed into a prime (53275727) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 275944 + ... + 276136.

It is an arithmetic number, because the mean of its divisors is an integer number (1929330).

Almost surely, 2^53275720 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 53275720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61738560).

53275720 is an abundant number, since it is smaller than the sum of its proper divisors (70201400).

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

53275720 is a wasteful number, since it uses less digits than its factorization.

53275720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 374 (or 370 counting only the distinct ones).

The product of its (nonzero) digits is 14700, while the sum is 31.

The square root of 53275720 is about 7299.0218522758. The cubic root of 53275720 is about 376.2788221612.

The spelling of 53275720 in words is "fifty-three million, two hundred seventy-five thousand, seven hundred twenty".