51169144 has 24 divisors (see below), whose sum is σ = 103892760. Its totient is φ = 23615904.

The previous prime is 51169121. The next prime is 51169159. The reversal of 51169144 is 44196115.

51169144 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 17572 + ... + 20275.

It is an arithmetic number, because the mean of its divisors is an integer number (4328865).

Almost surely, 2^51169144 is an apocalyptic number.

It is an amenable number.

51169144 is an abundant number, since it is smaller than the sum of its proper divisors (52723616).

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

51169144 is a wasteful number, since it uses less digits than its factorization.

51169144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37879 (or 37862 counting only the distinct ones).

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

The square root of 51169144 is about 7153.2610745030. The cubic root of 51169144 is about 371.2524974986.

The spelling of 51169144 in words is "fifty-one million, one hundred sixty-nine thousand, one hundred forty-four".