51145446 has 16 divisors (see below), whose sum is σ = 111590208. Its totient is φ = 15498600.

The previous prime is 51145441. The next prime is 51145453. The reversal of 51145446 is 64454115.

51145446 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 (51145441) 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, 387400 + ... + 387531.

It is an arithmetic number, because the mean of its divisors is an integer number (6974388).

Almost surely, 2^51145446 is an apocalyptic number.

51145446 is an abundant number, since it is smaller than the sum of its proper divisors (60444762).

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

51145446 is a wasteful number, since it uses less digits than its factorization.

51145446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 774947.

The product of its digits is 9600, while the sum is 30.

The square root of 51145446 is about 7151.6044353697. The cubic root of 51145446 is about 371.1951758424.

The spelling of 51145446 in words is "fifty-one million, one hundred forty-five thousand, four hundred forty-six".