51563225 has 12 divisors (see below), whose sum is σ = 73072704. Its totient is φ = 35357520.

The previous prime is 51563201. The next prime is 51563249. The reversal of 51563225 is 52236515.

It is a happy number.

51563225 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (51563201) and next prime (51563249).

It is not a de Polignac number, because 51563225 - 2²² = 47368921 is a prime.

It is a Duffinian number.

It is a Curzon number.

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 11 ways as a sum of consecutive naturals, for example, 147149 + ... + 147498.

It is an arithmetic number, because the mean of its divisors is an integer number (6089392).

Almost surely, 2^51563225 is an apocalyptic number.

It is an amenable number.

51563225 is a deficient number, since it is larger than the sum of its proper divisors (21509479).

51563225 is a wasteful number, since it uses less digits than its factorization.

51563225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 294664 (or 294659 counting only the distinct ones).

The product of its digits is 9000, while the sum is 29.

The square root of 51563225 is about 7180.7537905153. The cubic root of 51563225 is about 372.2031326893.

The spelling of 51563225 in words is "fifty-one million, five hundred sixty-three thousand, two hundred twenty-five".