40551443 has 12 divisors (see below), whose sum is σ = 43578360. Its totient is φ = 37602240.

The previous prime is 40551431. The next prime is 40551449. The reversal of 40551443 is 34415504.

It is not a de Polignac number, because 40551443 - 2²⁰ = 39502867 is a prime.

It is a hoax number, since the sum of its digits (26) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40551449) 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 in 11 ways as a sum of consecutive naturals, for example, 291668 + ... + 291806.

It is an arithmetic number, because the mean of its divisors is an integer number (3631530).

Almost surely, 2^40551443 is an apocalyptic number.

40551443 is a deficient number, since it is larger than the sum of its proper divisors (3026917).

40551443 is a wasteful number, since it uses less digits than its factorization.

40551443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 418 (or 287 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 40551443 is about 6368.0014918340. The cubic root of 40551443 is about 343.5596125670.

Adding to 40551443 its reverse (34415504), we get a palindrome (74966947).

The spelling of 40551443 in words is "forty million, five hundred fifty-one thousand, four hundred forty-three".