51144125 has 8 divisors (see below), whose sum is σ = 63828024. Its totient is φ = 40915200.

The previous prime is 51144073. The next prime is 51144127. The reversal of 51144125 is 52144115.

It can be written as a sum of positive squares in 4 ways, for example, as 64516 + 51079609 = 254^2 + 7147^2 .

It is not a de Polignac number, because 51144125 - 2⁶ = 51144061 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51144125.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51144127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 204452 + ... + 204701.

It is an arithmetic number, because the mean of its divisors is an integer number (7978503).

Almost surely, 2^51144125 is an apocalyptic number.

It is an amenable number.

51144125 is a deficient number, since it is larger than the sum of its proper divisors (12683899).

51144125 is an equidigital number, since it uses as much as digits as its factorization.

51144125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 409168 (or 409158 counting only the distinct ones).

The product of its digits is 800, while the sum is 23.

The square root of 51144125 is about 7151.5120778756. The cubic root of 51144125 is about 371.1919800346.

The spelling of 51144125 in words is "fifty-one million, one hundred forty-four thousand, one hundred twenty-five".