51976807 has 4 divisors (see below), whose sum is σ = 53244576. Its totient is φ = 50709040.

The previous prime is 51976789. The next prime is 51976831. The reversal of 51976807 is 70867915.

51976807 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 51976807 - 2⁷ = 51976679 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51976867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 633823 + ... + 633904.

It is an arithmetic number, because the mean of its divisors is an integer number (13311144).

Almost surely, 2^51976807 is an apocalyptic number.

51976807 is a deficient number, since it is larger than the sum of its proper divisors (1267769).

51976807 is a wasteful number, since it uses less digits than its factorization.

51976807 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1267768.

The product of its (nonzero) digits is 105840, while the sum is 43.

The square root of 51976807 is about 7209.4942263657. The cubic root of 51976807 is about 373.1956150376.

The spelling of 51976807 in words is "fifty-one million, nine hundred seventy-six thousand, eight hundred seven".