40551473 has 2 divisors, whose sum is σ = 40551474. Its totient is φ = 40551472.

The previous prime is 40551449. The next prime is 40551479. The reversal of 40551473 is 37415504.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40551424 + 49 = 6368^2 + 7^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40551473 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (40551479) 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, 20275736 + 20275737.

It is an arithmetic number, because the mean of its divisors is an integer number (20275737).

Almost surely, 2^40551473 is an apocalyptic number.

It is an amenable number.

40551473 is a deficient number, since it is larger than the sum of its proper divisors (1).

40551473 is an equidigital number, since it uses as much as digits as its factorization.

40551473 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8400, while the sum is 29.

The square root of 40551473 is about 6368.0038473606. The cubic root of 40551473 is about 343.5596972889.

Adding to 40551473 its reverse (37415504), we get a palindrome (77966977).

The spelling of 40551473 in words is "forty million, five hundred fifty-one thousand, four hundred seventy-three".