51085927 has 4 divisors (see below), whose sum is σ = 53774680. Its totient is φ = 48397176.

The previous prime is 51085913. The next prime is 51085943. The reversal of 51085927 is 72958015.

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 51085927 - 2¹⁹ = 50561639 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 (51085987) 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, 1344348 + ... + 1344385.

It is an arithmetic number, because the mean of its divisors is an integer number (13443670).

Almost surely, 2^51085927 is an apocalyptic number.

51085927 is a deficient number, since it is larger than the sum of its proper divisors (2688753).

51085927 is a wasteful number, since it uses less digits than its factorization.

51085927 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2688752.

The product of its (nonzero) digits is 25200, while the sum is 37.

The square root of 51085927 is about 7147.4419899710. The cubic root of 51085927 is about 371.0511308164.

The spelling of 51085927 in words is "fifty-one million, eighty-five thousand, nine hundred twenty-seven".