51194851 has 4 divisors (see below), whose sum is σ = 51231400. Its totient is φ = 51158304.

The previous prime is 51194839. The next prime is 51194861. The reversal of 51194851 is 15849115.

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

It is a cyclic number.

It is not a de Polignac number, because 51194851 - 2⁷ = 51194723 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51194821) 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, 16086 + ... + 19003.

It is an arithmetic number, because the mean of its divisors is an integer number (12807850).

Almost surely, 2^51194851 is an apocalyptic number.

51194851 is a deficient number, since it is larger than the sum of its proper divisors (36549).

51194851 is a wasteful number, since it uses less digits than its factorization.

51194851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36548.

The product of its digits is 7200, while the sum is 34.

The square root of 51194851 is about 7155.0577216400. The cubic root of 51194851 is about 371.3146585942.

The spelling of 51194851 in words is "fifty-one million, one hundred ninety-four thousand, eight hundred fifty-one".