51225245 has 8 divisors (see below), whose sum is σ = 61793280. Its totient is φ = 40764880.

The previous prime is 51225227. The next prime is 51225269. The reversal of 51225245 is 54252215.

51225245 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 51225245 - 2¹⁰ = 51224221 is a prime.

It is a congruent 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 7 ways as a sum of consecutive naturals, for example, 25865 + ... + 27774.

It is an arithmetic number, because the mean of its divisors is an integer number (7724160).

Almost surely, 2^51225245 is an apocalyptic number.

It is an amenable number.

51225245 is a deficient number, since it is larger than the sum of its proper divisors (10568035).

51225245 is a wasteful number, since it uses less digits than its factorization.

51225245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53835.

The product of its digits is 4000, while the sum is 26.

The square root of 51225245 is about 7157.1813586076. The cubic root of 51225245 is about 371.3881263019.

The spelling of 51225245 in words is "fifty-one million, two hundred twenty-five thousand, two hundred forty-five".