51748572 has 12 divisors (see below), whose sum is σ = 120746696. Its totient is φ = 17249520.

The previous prime is 51748559. The next prime is 51748573. The reversal of 51748572 is 27584715.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 51748572.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51748573) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2156179 + ... + 2156202.

Almost surely, 2^51748572 is an apocalyptic number.

It is an amenable number.

51748572 is an abundant number, since it is smaller than the sum of its proper divisors (68998124).

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

51748572 is a wasteful number, since it uses less digits than its factorization.

51748572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4312388 (or 4312386 counting only the distinct ones).

The product of its digits is 78400, while the sum is 39.

The square root of 51748572 is about 7193.6480314233. The cubic root of 51748572 is about 372.6485679763.

The spelling of 51748572 in words is "fifty-one million, seven hundred forty-eight thousand, five hundred seventy-two".