51142288 has 20 divisors (see below), whose sum is σ = 101767420. Its totient is φ = 24879744.

The previous prime is 51142277. The next prime is 51142303. The reversal of 51142288 is 88224115.

It can be written as a sum of positive squares in 2 ways, for example, as 22924944 + 28217344 = 4788^2 + 5312^2 .

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 42603 + ... + 43786.

It is an arithmetic number, because the mean of its divisors is an integer number (5088371).

Almost surely, 2^51142288 is an apocalyptic number.

It is an amenable number.

51142288 is a deficient number, since it is larger than the sum of its proper divisors (50625132).

51142288 is a wasteful number, since it uses less digits than its factorization.

51142288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86434 (or 86428 counting only the distinct ones).

The product of its digits is 5120, while the sum is 31.

The square root of 51142288 is about 7151.3836423450. The cubic root of 51142288 is about 371.1875358107.

The spelling of 51142288 in words is "fifty-one million, one hundred forty-two thousand, two hundred eighty-eight".