51144375 has 20 divisors (see below), whose sum is σ = 85216472. Its totient is φ = 27276000.

The previous prime is 51144367. The next prime is 51144377. The reversal of 51144375 is 57344115.

It is not a de Polignac number, because 51144375 - 2³ = 51144367 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51144377) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 11764 + ... + 15513.

Almost surely, 2^51144375 is an apocalyptic number.

51144375 is a deficient number, since it is larger than the sum of its proper divisors (34072097).

51144375 is an equidigital number, since it uses as much as digits as its factorization.

51144375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27300 (or 27285 counting only the distinct ones).

The product of its digits is 8400, while the sum is 30.

The square root of 51144375 is about 7151.5295566753. The cubic root of 51144375 is about 371.1925848473.

The spelling of 51144375 in words is "fifty-one million, one hundred forty-four thousand, three hundred seventy-five".