53371638 has 48 divisors (see below), whose sum is σ = 121676256. Its totient is φ = 16874880.

The previous prime is 53371621. The next prime is 53371657. The reversal of 53371638 is 83617335.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 56248 + ... + 57188.

It is an arithmetic number, because the mean of its divisors is an integer number (2534922).

Almost surely, 2^53371638 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 53371638, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60838128).

53371638 is an abundant number, since it is smaller than the sum of its proper divisors (68304618).

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

53371638 is a wasteful number, since it uses less digits than its factorization.

53371638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1109 (or 1106 counting only the distinct ones).

The product of its digits is 45360, while the sum is 36.

The square root of 53371638 is about 7305.5895039346. The cubic root of 53371638 is about 376.5045051656.

The spelling of 53371638 in words is "fifty-three million, three hundred seventy-one thousand, six hundred thirty-eight".