51752791 has 4 divisors (see below), whose sum is σ = 53537400. Its totient is φ = 49968184.

The previous prime is 51752773. The next prime is 51752801. The reversal of 51752791 is 19725715.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 51752791 - 2⁵ = 51752759 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51752791.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51752761) 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, 892261 + ... + 892318.

It is an arithmetic number, because the mean of its divisors is an integer number (13384350).

Almost surely, 2^51752791 is an apocalyptic number.

51752791 is a deficient number, since it is larger than the sum of its proper divisors (1784609).

51752791 is a wasteful number, since it uses less digits than its factorization.

51752791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1784608.

The product of its digits is 22050, while the sum is 37.

The square root of 51752791 is about 7193.9412702635. The cubic root of 51752791 is about 372.6586949004.

The spelling of 51752791 in words is "fifty-one million, seven hundred fifty-two thousand, seven hundred ninety-one".