51744289 has 4 divisors (see below), whose sum is σ = 52399360. Its totient is φ = 51089220.

The previous prime is 51744281. The next prime is 51744299. The reversal of 51744289 is 98244715.

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 51744289 - 2³ = 51744281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51744281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 327417 + ... + 327574.

It is an arithmetic number, because the mean of its divisors is an integer number (13099840).

Almost surely, 2^51744289 is an apocalyptic number.

It is an amenable number.

51744289 is a deficient number, since it is larger than the sum of its proper divisors (655071).

51744289 is an equidigital number, since it uses as much as digits as its factorization.

51744289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 655070.

The product of its digits is 80640, while the sum is 40.

The square root of 51744289 is about 7193.3503320775. The cubic root of 51744289 is about 372.6382868690.

The spelling of 51744289 in words is "fifty-one million, seven hundred forty-four thousand, two hundred eighty-nine".