8372257 has 4 divisors (see below), whose sum is σ = 8391600. Its totient is φ = 8352916.

The previous prime is 8372237. The next prime is 8372261. The reversal of 8372257 is 7522738.

8372257 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 8372257 - 2¹⁵ = 8339489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8372227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9007 + ... + 9892.

It is an arithmetic number, because the mean of its divisors is an integer number (2097900).

Almost surely, 2^8372257 is an apocalyptic number.

It is an amenable number.

8372257 is a deficient number, since it is larger than the sum of its proper divisors (19343).

8372257 is a wasteful number, since it uses less digits than its factorization.

8372257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19342.

The product of its digits is 23520, while the sum is 34.

The square root of 8372257 is about 2893.4852686682. The cubic root of 8372257 is about 203.0552318025.

The spelling of 8372257 in words is "eight million, three hundred seventy-two thousand, two hundred fifty-seven".