13545971 has 2 divisors, whose sum is σ = 13545972. Its totient is φ = 13545970.

The previous prime is 13545941. The next prime is 13546003. The reversal of 13545971 is 17954531.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13545971 - 2⁶ = 13545907 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (13545941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6772985 + 6772986.

It is an arithmetic number, because the mean of its divisors is an integer number (6772986).

Almost surely, 2^13545971 is an apocalyptic number.

13545971 is a deficient number, since it is larger than the sum of its proper divisors (1).

13545971 is an equidigital number, since it uses as much as digits as its factorization.

13545971 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18900, while the sum is 35.

The square root of 13545971 is about 3680.4851582366. The cubic root of 13545971 is about 238.3801271946.

The spelling of 13545971 in words is "thirteen million, five hundred forty-five thousand, nine hundred seventy-one".