53425638 has 48 divisors (see below), whose sum is σ = 133136640. Its totient is φ = 15167088.

The previous prime is 53425637. The next prime is 53425661. The reversal of 53425638 is 83652435.

It is a happy number.

53425638 is a `hidden beast` number, since 53 + 42 + 563 + 8 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53425637) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19773 + ... + 22311.

It is an arithmetic number, because the mean of its divisors is an integer number (2773680).

Almost surely, 2^53425638 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 53425638, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66568320).

53425638 is an abundant number, since it is smaller than the sum of its proper divisors (79711002).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

53425638 is a wasteful number, since it uses less digits than its factorization.

53425638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2721 (or 2718 counting only the distinct ones).

The product of its digits is 86400, while the sum is 36.

The square root of 53425638 is about 7309.2843698956. The cubic root of 53425638 is about 376.6314414375.

The spelling of 53425638 in words is "fifty-three million, four hundred twenty-five thousand, six hundred thirty-eight".