51506374 has 16 divisors (see below), whose sum is σ = 78336000. Its totient is φ = 25397064.

The previous prime is 51506369. The next prime is 51506381. The reversal of 51506374 is 47360515.

51506374 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 50037 + ... + 51055.

It is an arithmetic number, because the mean of its divisors is an integer number (4896000).

Almost surely, 2^51506374 is an apocalyptic number.

51506374 is a deficient number, since it is larger than the sum of its proper divisors (26829626).

51506374 is a wasteful number, since it uses less digits than its factorization.

51506374 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1347.

The product of its (nonzero) digits is 12600, while the sum is 31.

The square root of 51506374 is about 7176.7941310867. The cubic root of 51506374 is about 372.0662916121.

Adding to 51506374 its reverse (47360515), we get a palindrome (98866889).

The spelling of 51506374 in words is "fifty-one million, five hundred six thousand, three hundred seventy-four".