51751894 has 8 divisors (see below), whose sum is σ = 77809248. Its totient is φ = 25815480.

The previous prime is 51751883. The next prime is 51751901. The reversal of 51751894 is 49815715.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29157 + ... + 30880.

It is an arithmetic number, because the mean of its divisors is an integer number (9726156).

Almost surely, 2^51751894 is an apocalyptic number.

51751894 is a deficient number, since it is larger than the sum of its proper divisors (26057354).

51751894 is a wasteful number, since it uses less digits than its factorization.

51751894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60470.

The product of its digits is 50400, while the sum is 40.

The square root of 51751894 is about 7193.8789258647. The cubic root of 51751894 is about 372.6565418649.

The spelling of 51751894 in words is "fifty-one million, seven hundred fifty-one thousand, eight hundred ninety-four".