8197457 has 4 divisors (see below), whose sum is σ = 8352180. Its totient is φ = 8042736.

The previous prime is 8197429. The next prime is 8197471. The reversal of 8197457 is 7547918.

8197457 is nontrivially palindromic in base 11.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6599761 + 1597696 = 2569^2 + 1264^2 .

It is a cyclic number.

It is not a de Polignac number, because 8197457 - 2⁸ = 8197201 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8197487) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77282 + ... + 77387.

It is an arithmetic number, because the mean of its divisors is an integer number (2088045).

Almost surely, 2^8197457 is an apocalyptic number.

It is an amenable number.

8197457 is a deficient number, since it is larger than the sum of its proper divisors (154723).

8197457 is a wasteful number, since it uses less digits than its factorization.

8197457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154722.

The product of its digits is 70560, while the sum is 41.

The square root of 8197457 is about 2863.1201511638. The cubic root of 8197457 is about 201.6321196960.

The spelling of 8197457 in words is "eight million, one hundred ninety-seven thousand, four hundred fifty-seven".