52401638 has 8 divisors (see below), whose sum is σ = 79775832. Its totient is φ = 25809696.

The previous prime is 52401611. The next prime is 52401647. The reversal of 52401638 is 83610425.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 52401638.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 195395 + ... + 195662.

It is an arithmetic number, because the mean of its divisors is an integer number (9971979).

Almost surely, 2^52401638 is an apocalyptic number.

52401638 is a deficient number, since it is larger than the sum of its proper divisors (27374194).

52401638 is a wasteful number, since it uses less digits than its factorization.

52401638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 391126.

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 52401638 is about 7238.8975680003. The cubic root of 52401638 is about 374.2096253991.

The spelling of 52401638 in words is "fifty-two million, four hundred one thousand, six hundred thirty-eight".