51757572 has 12 divisors (see below), whose sum is σ = 120767696. Its totient is φ = 17252520.

The previous prime is 51757543. The next prime is 51757579. The reversal of 51757572 is 27575715.

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 51757572.

It is not an unprimeable number, because it can be changed into a prime (51757579) 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, 2156554 + ... + 2156577.

Almost surely, 2^51757572 is an apocalyptic number.

It is an amenable number.

51757572 is an abundant number, since it is smaller than the sum of its proper divisors (69010124).

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

51757572 is a wasteful number, since it uses less digits than its factorization.

51757572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4313138 (or 4313136 counting only the distinct ones).

The product of its digits is 85750, while the sum is 39.

The square root of 51757572 is about 7194.2735561000. The cubic root of 51757572 is about 372.6701701356.

The spelling of 51757572 in words is "fifty-one million, seven hundred fifty-seven thousand, five hundred seventy-two".