53789621 has 4 divisors (see below), whose sum is σ = 53804544. Its totient is φ = 53774700.

The previous prime is 53789609. The next prime is 53789623. The reversal of 53789621 is 12698735.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 53789621 - 2²² = 49595317 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 (53789623) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1676 + ... + 10506.

It is an arithmetic number, because the mean of its divisors is an integer number (13451136).

Almost surely, 2^53789621 is an apocalyptic number.

It is an amenable number.

53789621 is a deficient number, since it is larger than the sum of its proper divisors (14923).

53789621 is an equidigital number, since it uses as much as digits as its factorization.

53789621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14922.

The product of its digits is 90720, while the sum is 41.

The square root of 53789621 is about 7334.1407813049. The cubic root of 53789621 is about 377.4848225701.

The spelling of 53789621 in words is "fifty-three million, seven hundred eighty-nine thousand, six hundred twenty-one".