51027977 has 32 divisors (see below), whose sum is σ = 72145920. Its totient is φ = 34758720.

The previous prime is 51027967. The next prime is 51028009. The reversal of 51027977 is 77972015.

It is a cyclic number.

It is not a de Polignac number, because 51027977 - 2⁸ = 51027721 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51027977.

It is not an unprimeable number, because it can be changed into a prime (51027967) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17678 + ... + 20360.

It is an arithmetic number, because the mean of its divisors is an integer number (2254560).

Almost surely, 2^51027977 is an apocalyptic number.

It is an amenable number.

51027977 is a deficient number, since it is larger than the sum of its proper divisors (21117943).

51027977 is a wasteful number, since it uses less digits than its factorization.

51027977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2733.

The product of its (nonzero) digits is 30870, while the sum is 38.

The square root of 51027977 is about 7143.3869417805. The cubic root of 51027977 is about 370.9107754717.

The spelling of 51027977 in words is "fifty-one million, twenty-seven thousand, nine hundred seventy-seven".