51051694 has 4 divisors (see below), whose sum is σ = 76577544. Its totient is φ = 25525846.

The previous prime is 51051691. The next prime is 51051701. The reversal of 51051694 is 49615015.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51051691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12762922 + ... + 12762925.

It is an arithmetic number, because the mean of its divisors is an integer number (19144386).

Almost surely, 2^51051694 is an apocalyptic number.

51051694 is a deficient number, since it is larger than the sum of its proper divisors (25525850).

51051694 is a wasteful number, since it uses less digits than its factorization.

51051694 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25525849.

The product of its (nonzero) digits is 5400, while the sum is 31.

The square root of 51051694 is about 7145.0468158018. The cubic root of 51051694 is about 370.9682310666.

The spelling of 51051694 in words is "fifty-one million, fifty-one thousand, six hundred ninety-four".