53420638 has 4 divisors (see below), whose sum is σ = 80130960. Its totient is φ = 26710318.

The previous prime is 53420603. The next prime is 53420659. The reversal of 53420638 is 83602435.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13355158 + ... + 13355161.

It is an arithmetic number, because the mean of its divisors is an integer number (20032740).

Almost surely, 2^53420638 is an apocalyptic number.

53420638 is a deficient number, since it is larger than the sum of its proper divisors (26710322).

53420638 is a wasteful number, since it uses less digits than its factorization.

53420638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26710321.

The product of its (nonzero) digits is 17280, while the sum is 31.

The square root of 53420638 is about 7308.9423311448. The cubic root of 53420638 is about 376.6196916732.

The spelling of 53420638 in words is "fifty-three million, four hundred twenty thousand, six hundred thirty-eight".