10997491 has 2 divisors, whose sum is σ = 10997492. Its totient is φ = 10997490.

The previous prime is 10997489. The next prime is 10997501. The reversal of 10997491 is 19479901.

It is a happy number.

10997491 is digitally balanced in base 3, 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 10997491 - 2¹ = 10997489 is a prime.

Together with 10997489, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (10997411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5498745 + 5498746.

It is an arithmetic number, because the mean of its divisors is an integer number (5498746).

Almost surely, 2^10997491 is an apocalyptic number.

10997491 is a deficient number, since it is larger than the sum of its proper divisors (1).

10997491 is an equidigital number, since it uses as much as digits as its factorization.

10997491 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20412, while the sum is 40.

The square root of 10997491 is about 3316.2465228025. The cubic root of 10997491 is about 222.3810987832.

The spelling of 10997491 in words is "ten million, nine hundred ninety-seven thousand, four hundred ninety-one".