53211844 has 18 divisors (see below), whose sum is σ = 108324510. Its totient is φ = 22804992.

The previous prime is 53211833. The next prime is 53211871. The reversal of 53211844 is 44811235.

It can be written as a sum of positive squares in only one way, i.e., 52998400 + 213444 = 7280^2 + 462^2 .

It is a Harshad number since it is a multiple of its sum of digits (28).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 135549 + ... + 135940.

Almost surely, 2^53211844 is an apocalyptic number.

It is an amenable number.

53211844 is an abundant number, since it is smaller than the sum of its proper divisors (55112666).

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

53211844 is a wasteful number, since it uses less digits than its factorization.

53211844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271507 (or 271498 counting only the distinct ones).

The product of its digits is 3840, while the sum is 28.

The square root of 53211844 is about 7294.6448851195. The cubic root of 53211844 is about 376.1283796565.

The spelling of 53211844 in words is "fifty-three million, two hundred eleven thousand, eight hundred forty-four".