51452125 has 8 divisors (see below), whose sum is σ = 64212408. Its totient is φ = 41161600.

The previous prime is 51452111. The next prime is 51452129. The reversal of 51452125 is 52125415.

It can be written as a sum of positive squares in 4 ways, for example, as 196 + 51451929 = 14^2 + 7173^2 .

It is a de Polignac number, because none of the positive numbers 2^k-51452125 is a prime.

It is a hoax number, since the sum of its digits (25) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (25).

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 51452125.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51452129) 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, 205684 + ... + 205933.

It is an arithmetic number, because the mean of its divisors is an integer number (8026551).

Almost surely, 2^51452125 is an apocalyptic number.

It is an amenable number.

51452125 is a deficient number, since it is larger than the sum of its proper divisors (12760283).

51452125 is an equidigital number, since it uses as much as digits as its factorization.

51452125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 411632 (or 411622 counting only the distinct ones).

The product of its digits is 2000, while the sum is 25.

The square root of 51452125 is about 7173.0136623319. The cubic root of 51452125 is about 371.9356196637.

The spelling of 51452125 in words is "fifty-one million, four hundred fifty-two thousand, one hundred twenty-five".