51799894 has 8 divisors (see below), whose sum is σ = 77731920. Its totient is φ = 25889256.

The previous prime is 51799883. The next prime is 51799897. The reversal of 51799894 is 49899715.

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

It is a super-2 number, since 2×51799894² = 5366458036822472, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51799897) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3927 + ... + 10909.

It is an arithmetic number, because the mean of its divisors is an integer number (9716490).

Almost surely, 2^51799894 is an apocalyptic number.

51799894 is a deficient number, since it is larger than the sum of its proper divisors (25932026).

51799894 is a wasteful number, since it uses less digits than its factorization.

51799894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10694.

The product of its digits is 816480, while the sum is 52.

The square root of 51799894 is about 7197.2143222222. The cubic root of 51799894 is about 372.7717195279.

The spelling of 51799894 in words is "fifty-one million, seven hundred ninety-nine thousand, eight hundred ninety-four".