40297511 has 2 divisors, whose sum is σ = 40297512. Its totient is φ = 40297510.

The previous prime is 40297507. The next prime is 40297513. The reversal of 40297511 is 11579204.

40297511 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 40297511 - 2² = 40297507 is a prime.

It is a Sophie Germain prime.

Together with 40297513, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40297513) 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, 20148755 + 20148756.

It is an arithmetic number, because the mean of its divisors is an integer number (20148756).

Almost surely, 2^40297511 is an apocalyptic number.

40297511 is a deficient number, since it is larger than the sum of its proper divisors (1).

40297511 is an equidigital number, since it uses as much as digits as its factorization.

40297511 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2520, while the sum is 29.

The square root of 40297511 is about 6348.0320572600. The cubic root of 40297511 is about 342.8409902526.

The spelling of 40297511 in words is "forty million, two hundred ninety-seven thousand, five hundred eleven".