51071208 has 16 divisors (see below), whose sum is σ = 127678080. Its totient is φ = 17023728.

The previous prime is 51071197. The next prime is 51071227. The reversal of 51071208 is 80217015.

It is a Harshad number since it is a multiple of its sum of digits (24), and also a Moran number because the ratio is a prime number: 2127967 = 51071208 / (5 + 1 + 0 + 7 + 1 + 2 + 0 + 8).

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, 1063960 + ... + 1064007.

It is an arithmetic number, because the mean of its divisors is an integer number (7979880).

Almost surely, 2^51071208 is an apocalyptic number.

It is an amenable number.

51071208 is an abundant number, since it is smaller than the sum of its proper divisors (76606872).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51071208 is a wasteful number, since it uses less digits than its factorization.

51071208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2127976 (or 2127972 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 24.

The square root of 51071208 is about 7146.4122467151. The cubic root of 51071208 is about 371.0154913456.

The spelling of 51071208 in words is "fifty-one million, seventy-one thousand, two hundred eight".