51116225 has 6 divisors (see below), whose sum is σ = 63384150. Its totient is φ = 40892960.

The previous prime is 51116173. The next prime is 51116249. The reversal of 51116225 is 52261115.

It is a happy number.

51116225 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 2563201 + 48553024 = 1601^2 + 6968^2 .

It is not a de Polignac number, because 51116225 - 2¹⁶ = 51050689 is a prime.

It is a super-2 number, since 2×51116225² = 5225736916501250, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 51116225.

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 5 ways as a sum of consecutive naturals, for example, 1022300 + ... + 1022349.

It is an arithmetic number, because the mean of its divisors is an integer number (10564025).

Almost surely, 2^51116225 is an apocalyptic number.

It is an amenable number.

51116225 is a deficient number, since it is larger than the sum of its proper divisors (12267925).

51116225 is a wasteful number, since it uses less digits than its factorization.

51116225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2044659 (or 2044654 counting only the distinct ones).

The product of its digits is 600, while the sum is 23.

The square root of 51116225 is about 7149.5611753450. The cubic root of 51116225 is about 371.1244705537.

The spelling of 51116225 in words is "fifty-one million, one hundred sixteen thousand, two hundred twenty-five".