52628421 has 16 divisors (see below), whose sum is σ = 73630208. Its totient is φ = 33393600.

The previous prime is 52628383. The next prime is 52628437. The reversal of 52628421 is 12482625.

It is not a de Polignac number, because 52628421 - 2⁶ = 52628357 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52628321) 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, 1035 + ... + 10311.

It is an arithmetic number, because the mean of its divisors is an integer number (4601888).

Almost surely, 2^52628421 is an apocalyptic number.

It is an amenable number.

52628421 is a deficient number, since it is larger than the sum of its proper divisors (21001787).

52628421 is a wasteful number, since it uses less digits than its factorization.

52628421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9372.

The product of its digits is 7680, while the sum is 30.

The square root of 52628421 is about 7254.5448513329. The cubic root of 52628421 is about 374.7486813859.

The spelling of 52628421 in words is "fifty-two million, six hundred twenty-eight thousand, four hundred twenty-one".