51831874 has 8 divisors (see below), whose sum is σ = 80428860. Its totient is φ = 25022256.

The previous prime is 51831869. The next prime is 51831877. The reversal of 51831874 is 47813815.

It can be written as a sum of positive squares in 2 ways, for example, as 49801249 + 2030625 = 7057^2 + 1425^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (51831877) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 446769 + ... + 446884.

Almost surely, 2^51831874 is an apocalyptic number.

51831874 is a deficient number, since it is larger than the sum of its proper divisors (28596986).

51831874 is a wasteful number, since it uses less digits than its factorization.

51831874 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 893684.

The product of its digits is 26880, while the sum is 37.

The square root of 51831874 is about 7199.4356723288. The cubic root of 51831874 is about 372.8484171568.

The spelling of 51831874 in words is "fifty-one million, eight hundred thirty-one thousand, eight hundred seventy-four".