51277331 has 4 divisors (see below), whose sum is σ = 58602672. Its totient is φ = 43951992.

The previous prime is 51277309. The next prime is 51277351. The reversal of 51277331 is 13377215.

51277331 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 not a de Polignac number, because 51277331 - 2⁶ = 51277267 is a prime.

It is a super-2 number, since 2×51277331² = 5258729348967122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51277294 and 51277303.

It is not an unprimeable number, because it can be changed into a prime (51277351) 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, 3662660 + ... + 3662673.

It is an arithmetic number, because the mean of its divisors is an integer number (14650668).

Almost surely, 2^51277331 is an apocalyptic number.

51277331 is a deficient number, since it is larger than the sum of its proper divisors (7325341).

51277331 is an equidigital number, since it uses as much as digits as its factorization.

51277331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7325340.

The product of its digits is 4410, while the sum is 29.

The square root of 51277331 is about 7160.8191570518. The cubic root of 51277331 is about 371.5139598908.

The spelling of 51277331 in words is "fifty-one million, two hundred seventy-seven thousand, three hundred thirty-one".