51444143 has 2 divisors, whose sum is σ = 51444144. Its totient is φ = 51444142.

The previous prime is 51444137. The next prime is 51444157. The reversal of 51444143 is 34144415.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51444143 - 2¹² = 51440047 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51444103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25722071 + 25722072.

It is an arithmetic number, because the mean of its divisors is an integer number (25722072).

Almost surely, 2^51444143 is an apocalyptic number.

51444143 is a deficient number, since it is larger than the sum of its proper divisors (1).

51444143 is an equidigital number, since it uses as much as digits as its factorization.

51444143 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3840, while the sum is 26.

The square root of 51444143 is about 7172.4572497855. The cubic root of 51444143 is about 371.9163853195.

Adding to 51444143 its reverse (34144415), we get a palindrome (85588558).

The spelling of 51444143 in words is "fifty-one million, four hundred forty-four thousand, one hundred forty-three".