51371694 has 24 divisors (see below), whose sum is σ = 121424472. Its totient is φ = 15567120.

The previous prime is 51371693. The next prime is 51371741. The reversal of 51371694 is 49617315.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51371693) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 129529 + ... + 129924.

It is an arithmetic number, because the mean of its divisors is an integer number (5059353).

Almost surely, 2^51371694 is an apocalyptic number.

51371694 is an abundant number, since it is smaller than the sum of its proper divisors (70052778).

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

51371694 is a wasteful number, since it uses less digits than its factorization.

51371694 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259472 (or 259469 counting only the distinct ones).

The product of its digits is 22680, while the sum is 36.

The square root of 51371694 is about 7167.4049697223. The cubic root of 51371694 is about 371.7417128337.

It can be divided in two parts, 5137 and 1694, that multiplied together give a palindrome (8702078).

The spelling of 51371694 in words is "fifty-one million, three hundred seventy-one thousand, six hundred ninety-four".