51143908 has 12 divisors (see below), whose sum is σ = 89631360. Its totient is φ = 25534952.

The previous prime is 51143891. The next prime is 51143909. The reversal of 51143908 is 80934115.

It is a self number, because there is not a number n which added to its sum of digits gives 51143908.

It is not an unprimeable number, because it can be changed into a prime (51143909) 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 3 ways as a sum of consecutive naturals, for example, 6016 + ... + 11767.

It is an arithmetic number, because the mean of its divisors is an integer number (7469280).

Almost surely, 2^51143908 is an apocalyptic number.

It is an amenable number.

51143908 is a deficient number, since it is larger than the sum of its proper divisors (38487452).

51143908 is a wasteful number, since it uses less digits than its factorization.

51143908 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18506 (or 18504 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 31.

The square root of 51143908 is about 7151.4969062428. The cubic root of 51143908 is about 371.1914550556.

The spelling of 51143908 in words is "fifty-one million, one hundred forty-three thousand, nine hundred eight".