51502245 has 16 divisors (see below), whose sum is σ = 82494720. Its totient is φ = 27437504.

The previous prime is 51502207. The next prime is 51502249. The reversal of 51502245 is 54220515.

It is a happy number.

51502245 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 51502245 - 2¹⁰ = 51501221 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51502249) 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, 21151 + ... + 23459.

It is an arithmetic number, because the mean of its divisors is an integer number (5155920).

Almost surely, 2^51502245 is an apocalyptic number.

It is an amenable number.

51502245 is a deficient number, since it is larger than the sum of its proper divisors (30992475).

51502245 is a wasteful number, since it uses less digits than its factorization.

51502245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3804.

The product of its (nonzero) digits is 2000, while the sum is 24.

The square root of 51502245 is about 7176.5064620608. The cubic root of 51502245 is about 372.0563491354.

The spelling of 51502245 in words is "fifty-one million, five hundred two thousand, two hundred forty-five".