40921451 has 2 divisors, whose sum is σ = 40921452. Its totient is φ = 40921450.

The previous prime is 40921429. The next prime is 40921469. The reversal of 40921451 is 15412904.

40921451 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 a de Polignac number, because none of the positive numbers 2^k-40921451 is a prime.

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 40921451.

It is not a weakly prime, because it can be changed into another prime (40921351) 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, 20460725 + 20460726.

It is an arithmetic number, because the mean of its divisors is an integer number (20460726).

Almost surely, 2^40921451 is an apocalyptic number.

40921451 is a deficient number, since it is larger than the sum of its proper divisors (1).

40921451 is an equidigital number, since it uses as much as digits as its factorization.

40921451 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 40921451 is about 6396.9876504492. The cubic root of 40921451 is about 344.6013767453.

The spelling of 40921451 in words is "forty million, nine hundred twenty-one thousand, four hundred fifty-one".