51949225 has 6 divisors (see below), whose sum is σ = 64417070. Its totient is φ = 41559360.

The previous prime is 51949213. The next prime is 51949243. The reversal of 51949225 is 52294915.

51949225 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 1411344 + 50537881 = 1188^2 + 7109^2 .

It is not a de Polignac number, because 51949225 - 2¹⁹ = 51424937 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 5 ways as a sum of consecutive naturals, for example, 1038960 + ... + 1039009.

Almost surely, 2^51949225 is an apocalyptic number.

It is an amenable number.

51949225 is a deficient number, since it is larger than the sum of its proper divisors (12467845).

51949225 is a wasteful number, since it uses less digits than its factorization.

51949225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2077979 (or 2077974 counting only the distinct ones).

The product of its digits is 32400, while the sum is 37.

The square root of 51949225 is about 7207.5810782814. The cubic root of 51949225 is about 373.1295900586.

The spelling of 51949225 in words is "fifty-one million, nine hundred forty-nine thousand, two hundred twenty-five".