40401451 has 2 divisors, whose sum is σ = 40401452. Its totient is φ = 40401450.

The previous prime is 40401433. The next prime is 40401497. The reversal of 40401451 is 15410404.

40401451 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 a de Polignac number, because none of the positive numbers 2^k-40401451 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (40401421) 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, 20200725 + 20200726.

It is an arithmetic number, because the mean of its divisors is an integer number (20200726).

Almost surely, 2^40401451 is an apocalyptic number.

40401451 is a deficient number, since it is larger than the sum of its proper divisors (1).

40401451 is an equidigital number, since it uses as much as digits as its factorization.

40401451 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 40401451 is about 6356.2135741336. The cubic root of 40401451 is about 343.1355022261.

Adding to 40401451 its reverse (15410404), we get a palindrome (55811855).

The spelling of 40401451 in words is "forty million, four hundred one thousand, four hundred fifty-one".