51169225 has 24 divisors (see below), whose sum is σ = 65308320. Its totient is φ = 39755520.

The previous prime is 51169213. The next prime is 51169231. The reversal of 51169225 is 52296115.

51169225 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 51169225 - 2⁵ = 51169193 is a prime.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 166522 + ... + 166828.

It is an arithmetic number, because the mean of its divisors is an integer number (2721180).

Almost surely, 2^51169225 is an apocalyptic number.

It is an amenable number.

51169225 is a deficient number, since it is larger than the sum of its proper divisors (14139095).

51169225 is a wasteful number, since it uses less digits than its factorization.

51169225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 489 (or 484 counting only the distinct ones).

The product of its digits is 5400, while the sum is 31.

The square root of 51169225 is about 7153.2667362541. The cubic root of 51169225 is about 371.2526933942.

It can be divided in two parts, 5116 and 9225, that added together give a palindrome (14341).

The spelling of 51169225 in words is "fifty-one million, one hundred sixty-nine thousand, two hundred twenty-five".