53980621 has 4 divisors (see below), whose sum is σ = 54664000. Its totient is φ = 53297244.

The previous prime is 53980607. The next prime is 53980631. The reversal of 53980621 is 12608935.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 53980621 - 2¹⁵ = 53947853 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 (53980601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 341571 + ... + 341728.

It is an arithmetic number, because the mean of its divisors is an integer number (13666000).

Almost surely, 2^53980621 is an apocalyptic number.

It is an amenable number.

53980621 is a deficient number, since it is larger than the sum of its proper divisors (683379).

53980621 is an equidigital number, since it uses as much as digits as its factorization.

53980621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 683378.

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 53980621 is about 7347.1505360922. The cubic root of 53980621 is about 377.9310947252.

The spelling of 53980621 in words is "fifty-three million, nine hundred eighty thousand, six hundred twenty-one".