51986127 has 4 divisors (see below), whose sum is σ = 69314840. Its totient is φ = 34657416.

The previous prime is 51986107. The next prime is 51986131. The reversal of 51986127 is 72168915.

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

It is not a de Polignac number, because 51986127 - 2⁶ = 51986063 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 (51986107) 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, 8664352 + ... + 8664357.

It is an arithmetic number, because the mean of its divisors is an integer number (17328710).

Almost surely, 2^51986127 is an apocalyptic number.

51986127 is a deficient number, since it is larger than the sum of its proper divisors (17328713).

51986127 is a wasteful number, since it uses less digits than its factorization.

51986127 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17328712.

The product of its digits is 30240, while the sum is 39.

The square root of 51986127 is about 7210.1405672844. The cubic root of 51986127 is about 373.2179196991.

It can be divided in two parts, 5198 and 6127, that added together give a triangular number (11325 = T₁₅₀).

The spelling of 51986127 in words is "fifty-one million, nine hundred eighty-six thousand, one hundred twenty-seven".