40911551 has 2 divisors, whose sum is σ = 40911552. Its totient is φ = 40911550.

The previous prime is 40911539. The next prime is 40911553. The reversal of 40911551 is 15511904.

40911551 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40911551 - 2¹⁴ = 40895167 is a prime.

It is a Sophie Germain prime.

Together with 40911553, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40911551.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40911553) 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, 20455775 + 20455776.

It is an arithmetic number, because the mean of its divisors is an integer number (20455776).

Almost surely, 2^40911551 is an apocalyptic number.

40911551 is a deficient number, since it is larger than the sum of its proper divisors (1).

40911551 is an equidigital number, since it uses as much as digits as its factorization.

40911551 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 900, while the sum is 26.

The square root of 40911551 is about 6396.2138019300. The cubic root of 40911551 is about 344.5735850558.

The spelling of 40911551 in words is "forty million, nine hundred eleven thousand, five hundred fifty-one".