51282761 has 12 divisors (see below), whose sum is σ = 55388940. Its totient is φ = 47458560.

The previous prime is 51282733. The next prime is 51282787. The reversal of 51282761 is 16728215.

It can be written as a sum of positive squares in 6 ways, for example, as 2016400 + 49266361 = 1420^2 + 7019^2 .

It is not a de Polignac number, because 51282761 - 2⁶ = 51282697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51282731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16175 + ... + 19083.

It is an arithmetic number, because the mean of its divisors is an integer number (4615745).

Almost surely, 2^51282761 is an apocalyptic number.

It is an amenable number.

51282761 is a deficient number, since it is larger than the sum of its proper divisors (4106179).

51282761 is a wasteful number, since it uses less digits than its factorization.

51282761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3004 (or 2987 counting only the distinct ones).

The product of its digits is 6720, while the sum is 32.

The square root of 51282761 is about 7161.1982935819. The cubic root of 51282761 is about 371.5270732202.

The spelling of 51282761 in words is "fifty-one million, two hundred eighty-two thousand, seven hundred sixty-one".