51144271 has 4 divisors (see below), whose sum is σ = 51199792. Its totient is φ = 51088752.

The previous prime is 51144263. The next prime is 51144277. The reversal of 51144271 is 17244115.

51144271 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.

It is a cyclic number.

It is not a de Polignac number, because 51144271 - 2³ = 51144263 is a prime.

It is a super-2 number, since 2×51144271² = 5231472912242882, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51144277) 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, 26355 + ... + 28228.

It is an arithmetic number, because the mean of its divisors is an integer number (12799948).

Almost surely, 2^51144271 is an apocalyptic number.

51144271 is a deficient number, since it is larger than the sum of its proper divisors (55521).

51144271 is an equidigital number, since it uses as much as digits as its factorization.

51144271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55520.

The product of its digits is 1120, while the sum is 25.

The square root of 51144271 is about 7151.5222854998. The cubic root of 51144271 is about 371.1923332454.

Adding to 51144271 its reverse (17244115), we get a palindrome (68388386).

It can be divided in two parts, 51144 and 271, that added together give a palindrome (51415).

The spelling of 51144271 in words is "fifty-one million, one hundred forty-four thousand, two hundred seventy-one".