51444559 has 2 divisors, whose sum is σ = 51444560. Its totient is φ = 51444558.

The previous prime is 51444527. The next prime is 51444587. The reversal of 51444559 is 95544415.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51444559 - 2⁵ = 51444527 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51444509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25722279 + 25722280.

It is an arithmetic number, because the mean of its divisors is an integer number (25722280).

Almost surely, 2^51444559 is an apocalyptic number.

51444559 is a deficient number, since it is larger than the sum of its proper divisors (1).

51444559 is an equidigital number, since it uses as much as digits as its factorization.

51444559 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 72000, while the sum is 37.

The square root of 51444559 is about 7172.4862495511. The cubic root of 51444559 is about 371.9173878100.

It can be divided in two parts, 51444 and 559, that added together give a triangular number (52003 = T₃₂₂).

The spelling of 51444559 in words is "fifty-one million, four hundred forty-four thousand, five hundred fifty-nine".