51175140 has 48 divisors (see below), whose sum is σ = 148236480. Its totient is φ = 13175680.

The previous prime is 51175139. The next prime is 51175153. The reversal of 51175140 is 4157115.

It is a self number, because there is not a number n which added to its sum of digits gives 51175140.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12966 + ... + 16445.

It is an arithmetic number, because the mean of its divisors is an integer number (3088260).

Almost surely, 2^51175140 is an apocalyptic number.

It is an amenable number.

51175140 is an abundant number, since it is smaller than the sum of its proper divisors (97061340).

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

51175140 is a wasteful number, since it uses less digits than its factorization.

51175140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29452 (or 29450 counting only the distinct ones).

The product of its (nonzero) digits is 700, while the sum is 24.

The square root of 51175140 is about 7153.6801717717. The cubic root of 51175140 is about 371.2669980540.

It can be divided in two parts, 51175 and 140, that added together give a palindrome (51315).

The spelling of 51175140 in words is "fifty-one million, one hundred seventy-five thousand, one hundred forty".