53275621 has 8 divisors (see below), whose sum is σ = 61456320. Its totient is φ = 45237408.

The previous prime is 53275589. The next prime is 53275679. The reversal of 53275621 is 12657235.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 53275621 - 2⁵ = 53275589 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53275421) 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, 34816 + ... + 36313.

It is an arithmetic number, because the mean of its divisors is an integer number (7682040).

Almost surely, 2^53275621 is an apocalyptic number.

It is an amenable number.

53275621 is a deficient number, since it is larger than the sum of its proper divisors (8180699).

53275621 is a wasteful number, since it uses less digits than its factorization.

53275621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71243.

The product of its digits is 12600, while the sum is 31.

The square root of 53275621 is about 7299.0150705421. The cubic root of 53275621 is about 376.2785890867.

The spelling of 53275621 in words is "fifty-three million, two hundred seventy-five thousand, six hundred twenty-one".