51325261 has 16 divisors (see below), whose sum is σ = 59367168. Its totient is φ = 43948800.

The previous prime is 51325249. The next prime is 51325297. The reversal of 51325261 is 16252315.

51325261 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 51325261 - 2⁵ = 51325229 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 (51325201) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 14056 + ... + 17326.

It is an arithmetic number, because the mean of its divisors is an integer number (3710448).

Almost surely, 2^51325261 is an apocalyptic number.

It is an amenable number.

51325261 is a deficient number, since it is larger than the sum of its proper divisors (8041907).

51325261 is a wasteful number, since it uses less digits than its factorization.

51325261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3372.

The product of its digits is 1800, while the sum is 25.

The square root of 51325261 is about 7164.1650595167. The cubic root of 51325261 is about 371.6296778149.

Adding to 51325261 its reverse (16252315), we get a palindrome (67577576).

The spelling of 51325261 in words is "fifty-one million, three hundred twenty-five thousand, two hundred sixty-one".