51047418 has 16 divisors (see below), whose sum is σ = 103087296. Its totient is φ = 16850400.

The previous prime is 51047417. The next prime is 51047443. The reversal of 51047418 is 81474015.

It is not an unprimeable number, because it can be changed into a prime (51047417) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40683 + ... + 41918.

It is an arithmetic number, because the mean of its divisors is an integer number (6442956).

Almost surely, 2^51047418 is an apocalyptic number.

51047418 is an abundant number, since it is smaller than the sum of its proper divisors (52039878).

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

51047418 is a wasteful number, since it uses less digits than its factorization.

51047418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82709.

The product of its (nonzero) digits is 4480, while the sum is 30.

The square root of 51047418 is about 7144.7475812656. The cubic root of 51047418 is about 370.9578735622.

The spelling of 51047418 in words is "fifty-one million, forty-seven thousand, four hundred eighteen".