51944780 has 24 divisors (see below), whose sum is σ = 110935440. Its totient is φ = 20425280.

The previous prime is 51944779. The next prime is 51944819. The reversal of 51944780 is 8744915.

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, 20831 + ... + 23190.

It is an arithmetic number, because the mean of its divisors is an integer number (4622310).

Almost surely, 2^51944780 is an apocalyptic number.

It is an amenable number.

51944780 is an abundant number, since it is smaller than the sum of its proper divisors (58990660).

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

51944780 is a wasteful number, since it uses less digits than its factorization.

51944780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44089 (or 44087 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 38.

The square root of 51944780 is about 7207.2727158059. The cubic root of 51944780 is about 373.1189475621.

The spelling of 51944780 in words is "fifty-one million, nine hundred forty-four thousand, seven hundred eighty".