51812241 has 32 divisors (see below), whose sum is σ = 78328320. Its totient is φ = 30240000.

The previous prime is 51812231. The next prime is 51812263. The reversal of 51812241 is 14221815.

51812241 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 51812241 - 2⁷ = 51812113 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51812231) 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 31 ways as a sum of consecutive naturals, for example, 68616 + ... + 69366.

It is an arithmetic number, because the mean of its divisors is an integer number (2447760).

Almost surely, 2^51812241 is an apocalyptic number.

It is an amenable number.

51812241 is a deficient number, since it is larger than the sum of its proper divisors (26516079).

51812241 is a wasteful number, since it uses less digits than its factorization.

51812241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 857.

The product of its digits is 640, while the sum is 24.

The square root of 51812241 is about 7198.0720335379. The cubic root of 51812241 is about 372.8013350761.

The spelling of 51812241 in words is "fifty-one million, eight hundred twelve thousand, two hundred forty-one".