51269144 has 32 divisors (see below), whose sum is σ = 107146800. Its totient is φ = 22855680.

The previous prime is 51269123. The next prime is 51269191. The reversal of 51269144 is 44196215.

It is a plaindrome in base 15.

It is a self number, because there is not a number n which added to its sum of digits gives 51269144.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7337 + ... + 12504.

Almost surely, 2^51269144 is an apocalyptic number.

It is an amenable number.

51269144 is an abundant number, since it is smaller than the sum of its proper divisors (55877656).

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

51269144 is a wasteful number, since it uses less digits than its factorization.

51269144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19883 (or 19879 counting only the distinct ones).

The product of its digits is 8640, while the sum is 32.

The square root of 51269144 is about 7160.2474817565. The cubic root of 51269144 is about 371.4941867173.

The spelling of 51269144 in words is "fifty-one million, two hundred sixty-nine thousand, one hundred forty-four".