51047018 has 48 divisors (see below), whose sum is σ = 90305280. Its totient is φ = 21436800.

The previous prime is 51047011. The next prime is 51047021. The reversal of 51047018 is 81074015.

51047018 = 2057² + 2058² + ... + 2068².

51047018 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

51047018 is a modest number, since divided by 7018 gives 5104 as remainder.

It is not an unprimeable number, because it can be changed into a prime (51047011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 573518 + ... + 573606.

It is an arithmetic number, because the mean of its divisors is an integer number (1881360).

Almost surely, 2^51047018 is an apocalyptic number.

51047018 is a gapful number since it is divisible by the number (58) formed by its first and last digit.

51047018 is a deficient number, since it is larger than the sum of its proper divisors (39258262).

51047018 is a wasteful number, since it uses less digits than its factorization.

51047018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191 (or 162 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 26.

The square root of 51047018 is about 7144.7195886193. The cubic root of 51047018 is about 370.9569046360.

The spelling of 51047018 in words is "fifty-one million, forty-seven thousand, eighteen".