51395927 has 4 divisors (see below), whose sum is σ = 56068296. Its totient is φ = 46723560.

The previous prime is 51395891. The next prime is 51395933. The reversal of 51395927 is 72959315.

51395927 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 a de Polignac number, because none of the positive numbers 2^k-51395927 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 (51395027) 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, 2336168 + ... + 2336189.

It is an arithmetic number, because the mean of its divisors is an integer number (14017074).

Almost surely, 2^51395927 is an apocalyptic number.

51395927 is a deficient number, since it is larger than the sum of its proper divisors (4672369).

51395927 is a wasteful number, since it uses less digits than its factorization.

51395927 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4672368.

The product of its digits is 85050, while the sum is 41.

The square root of 51395927 is about 7169.0952706740. The cubic root of 51395927 is about 371.8001561782.

The spelling of 51395927 in words is "fifty-one million, three hundred ninety-five thousand, nine hundred twenty-seven".