51274977 has 16 divisors (see below), whose sum is σ = 77501760. Its totient is φ = 29892672.

The previous prime is 51274967. The next prime is 51274991. The reversal of 51274977 is 77947215.

It is not a de Polignac number, because 51274977 - 2⁷ = 51274849 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51274967) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33858 + ... + 35339.

It is an arithmetic number, because the mean of its divisors is an integer number (4843860).

Almost surely, 2^51274977 is an apocalyptic number.

51274977 is a gapful number since it is divisible by the number (57) formed by its first and last digit.

It is an amenable number.

51274977 is a deficient number, since it is larger than the sum of its proper divisors (26226783).

51274977 is a wasteful number, since it uses less digits than its factorization.

51274977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69232.

The product of its digits is 123480, while the sum is 42.

The square root of 51274977 is about 7160.6547884953. The cubic root of 51274977 is about 371.5082747454.

The spelling of 51274977 in words is "fifty-one million, two hundred seventy-four thousand, nine hundred seventy-seven".