51455441 has 2 divisors, whose sum is σ = 51455442. Its totient is φ = 51455440.

The previous prime is 51455431. The next prime is 51455473. The reversal of 51455441 is 14455415.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 47554816 + 3900625 = 6896^2 + 1975^2 .

It is a cyclic number.

It is not a de Polignac number, because 51455441 - 2⁶ = 51455377 is a prime.

It is a Sophie Germain prime.

It is a pancake number, because a pancake can be divided into 51455441 parts by 10144 straight cuts.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (51455431) 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 as a sum of consecutive naturals, namely, 25727720 + 25727721.

It is an arithmetic number, because the mean of its divisors is an integer number (25727721).

Almost surely, 2^51455441 is an apocalyptic number.

It is an amenable number.

51455441 is a deficient number, since it is larger than the sum of its proper divisors (1).

51455441 is an equidigital number, since it uses as much as digits as its factorization.

51455441 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8000, while the sum is 29.

The square root of 51455441 is about 7173.2448027375. The cubic root of 51455441 is about 371.9436096934.

It can be divided in two parts, 514 and 55441, that added together give a palindrome (55955).

The spelling of 51455441 in words is "fifty-one million, four hundred fifty-five thousand, four hundred forty-one".