53998644 has 48 divisors (see below), whose sum is σ = 144357248. Its totient is φ = 15389568.

The previous prime is 53998631. The next prime is 53998649. The reversal of 53998644 is 44689935.

It is a junction number, because it is equal to n+sod(n) for n = 53998593 and 53998602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53998649) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61134 + ... + 62010.

Almost surely, 2^53998644 is an apocalyptic number.

It is an amenable number.

53998644 is an abundant number, since it is smaller than the sum of its proper divisors (90358604).

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

53998644 is a wasteful number, since it uses less digits than its factorization.

53998644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1624 (or 1622 counting only the distinct ones).

The product of its digits is 933120, while the sum is 48.

The square root of 53998644 is about 7348.3769636567. The cubic root of 53998644 is about 377.9731511402.

The spelling of 53998644 in words is "fifty-three million, nine hundred ninety-eight thousand, six hundred forty-four".