40544551 has 2 divisors, whose sum is σ = 40544552. Its totient is φ = 40544550.

The previous prime is 40544549. The next prime is 40544591. The reversal of 40544551 is 15544504.

40544551 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40544551 - 2¹ = 40544549 is a prime.

Together with 40544549, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40544591) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20272275 + 20272276.

It is an arithmetic number, because the mean of its divisors is an integer number (20272276).

Almost surely, 2^40544551 is an apocalyptic number.

40544551 is a deficient number, since it is larger than the sum of its proper divisors (1).

40544551 is an equidigital number, since it uses as much as digits as its factorization.

40544551 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8000, while the sum is 28.

The square root of 40544551 is about 6367.4603257500. The cubic root of 40544551 is about 343.5401480151.

The spelling of 40544551 in words is "forty million, five hundred forty-four thousand, five hundred fifty-one".