51289874 has 8 divisors (see below), whose sum is σ = 77213388. Its totient is φ = 25552080.

The previous prime is 51289871. The next prime is 51289879. The reversal of 51289874 is 47898215.

51289874 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 44823025 + 6466849 = 6695^2 + 2543^2 .

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (51289871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45737 + ... + 46844.

Almost surely, 2^51289874 is an apocalyptic number.

51289874 is a deficient number, since it is larger than the sum of its proper divisors (25923514).

51289874 is a wasteful number, since it uses less digits than its factorization.

51289874 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92860.

The product of its digits is 161280, while the sum is 44.

The square root of 51289874 is about 7161.6949111226. The cubic root of 51289874 is about 371.5442495568.

The spelling of 51289874 in words is "fifty-one million, two hundred eighty-nine thousand, eight hundred seventy-four".