51031446 has 16 divisors (see below), whose sum is σ = 102250944. Its totient is φ = 16979144.

The previous prime is 51031439. The next prime is 51031447. The reversal of 51031446 is 64413015.

51031446 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51031447) 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 7 ways as a sum of consecutive naturals, for example, 4176 + ... + 10931.

It is an arithmetic number, because the mean of its divisors is an integer number (6390684).

Almost surely, 2^51031446 is an apocalyptic number.

51031446 is an abundant number, since it is smaller than the sum of its proper divisors (51219498).

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

51031446 is a wasteful number, since it uses less digits than its factorization.

51031446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15675.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 51031446 is about 7143.6297496441. The cubic root of 51031446 is about 370.9191804056.

The spelling of 51031446 in words is "fifty-one million, thirty-one thousand, four hundred forty-six".