51944436 has 24 divisors (see below), whose sum is σ = 134671040. Its totient is φ = 17314776.

The previous prime is 51944393. The next prime is 51944491. The reversal of 51944436 is 63444915.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 51944436.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 240376 + ... + 240591.

Almost surely, 2^51944436 is an apocalyptic number.

It is an amenable number.

51944436 is an abundant number, since it is smaller than the sum of its proper divisors (82726604).

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

51944436 is a wasteful number, since it uses less digits than its factorization.

51944436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 480980 (or 480972 counting only the distinct ones).

The product of its digits is 51840, while the sum is 36.

The square root of 51944436 is about 7207.2488509833. The cubic root of 51944436 is about 373.1181239106.

The spelling of 51944436 in words is "fifty-one million, nine hundred forty-four thousand, four hundred thirty-six".