53421375 has 64 divisors (see below), whose sum is σ = 103993344. Its totient is φ = 23846400.

The previous prime is 53421353. The next prime is 53421391. The reversal of 53421375 is 57312435.

It is not a de Polignac number, because 53421375 - 2⁵ = 53421343 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 123159 + ... + 123591.

It is an arithmetic number, because the mean of its divisors is an integer number (1624896).

Almost surely, 2^53421375 is an apocalyptic number.

53421375 is a deficient number, since it is larger than the sum of its proper divisors (50571969).

53421375 is a wasteful number, since it uses less digits than its factorization.

53421375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 505 (or 495 counting only the distinct ones).

The product of its digits is 12600, while the sum is 30.

The square root of 53421375 is about 7308.9927486624. The cubic root of 53421375 is about 376.6214236345.

The spelling of 53421375 in words is "fifty-three million, four hundred twenty-one thousand, three hundred seventy-five".