8113257 has 8 divisors (see below), whose sum is σ = 12019680. Its totient is φ = 5408820.

The previous prime is 8113213. The next prime is 8113271. The reversal of 8113257 is 7523118.

It is not a de Polignac number, because 8113257 - 2¹⁴ = 8096873 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 300491 = 8113257 / (8 + 1 + 1 + 3 + 2 + 5 + 7).

8113257 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 8113257.

It is not an unprimeable number, because it can be changed into a prime (8113297) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 150219 + ... + 150272.

It is an arithmetic number, because the mean of its divisors is an integer number (1502460).

Almost surely, 2^8113257 is an apocalyptic number.

It is an amenable number.

8113257 is a deficient number, since it is larger than the sum of its proper divisors (3906423).

8113257 is a wasteful number, since it uses less digits than its factorization.

8113257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300500 (or 300494 counting only the distinct ones).

The product of its digits is 1680, while the sum is 27.

The square root of 8113257 is about 2848.3779594710. The cubic root of 8113257 is about 200.9393891653.

The spelling of 8113257 in words is "eight million, one hundred thirteen thousand, two hundred fifty-seven".