51394297 has 4 divisors (see below), whose sum is σ = 54099280. Its totient is φ = 48689316.

The previous prime is 51394289. The next prime is 51394307. The reversal of 51394297 is 79249315.

51394297 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 51394297 - 2³ = 51394289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51394267) 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, 1352463 + ... + 1352500.

It is an arithmetic number, because the mean of its divisors is an integer number (13524820).

Almost surely, 2^51394297 is an apocalyptic number.

It is an amenable number.

51394297 is a deficient number, since it is larger than the sum of its proper divisors (2704983).

51394297 is a wasteful number, since it uses less digits than its factorization.

51394297 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2704982.

The product of its digits is 68040, while the sum is 40.

The square root of 51394297 is about 7168.9815873665. The cubic root of 51394297 is about 371.7962256419.

The spelling of 51394297 in words is "fifty-one million, three hundred ninety-four thousand, two hundred ninety-seven".