971257547 has 16 divisors (see below), whose sum is σ = 1093709568. Its totient is φ = 855787680.

The previous prime is 971257541. The next prime is 971257607. The reversal of 971257547 is 745752179.

It is not a de Polignac number, because 971257547 - 2⁸ = 971257291 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (971257541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 153272 + ... + 159482.

It is an arithmetic number, because the mean of its divisors is an integer number (68356848).

Almost surely, 2^971257547 is an apocalyptic number.

971257547 is a deficient number, since it is larger than the sum of its proper divisors (122452021).

971257547 is a wasteful number, since it uses less digits than its factorization.

971257547 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6770.

The product of its digits is 617400, while the sum is 47.

The square root of 971257547 is about 31165.0051660512. The cubic root of 971257547 is about 990.3258958363.

The spelling of 971257547 in words is "nine hundred seventy-one million, two hundred fifty-seven thousand, five hundred forty-seven".