971974547 has 2 divisors, whose sum is σ = 971974548. Its totient is φ = 971974546.

The previous prime is 971974501. The next prime is 971974603. The reversal of 971974547 is 745479179.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 971974547 - 2⁶ = 971974483 is a prime.

It is not a weakly prime, because it can be changed into another prime (971994547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 485987273 + 485987274.

It is an arithmetic number, because the mean of its divisors is an integer number (485987274).

Almost surely, 2^971974547 is an apocalyptic number.

971974547 is a deficient number, since it is larger than the sum of its proper divisors (1).

971974547 is an equidigital number, since it uses as much as digits as its factorization.

971974547 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2222640, while the sum is 53.

The square root of 971974547 is about 31176.5063308896. The cubic root of 971974547 is about 990.5695280956.

The spelling of 971974547 in words is "nine hundred seventy-one million, nine hundred seventy-four thousand, five hundred forty-seven".