51295289 has 4 divisors (see below), whose sum is σ = 51313920. Its totient is φ = 51276660.

The previous prime is 51295247. The next prime is 51295319. The reversal of 51295289 is 98259215.

51295289 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 51295289 - 2⁸ = 51295033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51292289) 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 3 ways as a sum of consecutive naturals, for example, 4277 + ... + 10994.

It is an arithmetic number, because the mean of its divisors is an integer number (12828480).

Almost surely, 2^51295289 is an apocalyptic number.

It is an amenable number.

51295289 is a deficient number, since it is larger than the sum of its proper divisors (18631).

51295289 is a wasteful number, since it uses less digits than its factorization.

51295289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18630.

The product of its digits is 64800, while the sum is 41.

The square root of 51295289 is about 7162.0729541104. The cubic root of 51295289 is about 371.5573245309.

The spelling of 51295289 in words is "fifty-one million, two hundred ninety-five thousand, two hundred eighty-nine".