51175772 has 6 divisors (see below), whose sum is σ = 89557608. Its totient is φ = 25587884.

The previous prime is 51175771. The next prime is 51175777. The reversal of 51175772 is 27757115.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51175771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6396968 + ... + 6396975.

It is an arithmetic number, because the mean of its divisors is an integer number (14926268).

Almost surely, 2^51175772 is an apocalyptic number.

It is an amenable number.

51175772 is a deficient number, since it is larger than the sum of its proper divisors (38381836).

51175772 is a wasteful number, since it uses less digits than its factorization.

51175772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12793947 (or 12793945 counting only the distinct ones).

The product of its digits is 17150, while the sum is 35.

The square root of 51175772 is about 7153.7243447033. The cubic root of 51175772 is about 371.2685263988.

The spelling of 51175772 in words is "fifty-one million, one hundred seventy-five thousand, seven hundred seventy-two".