8157227 has 4 divisors (see below), whose sum is σ = 8784720. Its totient is φ = 7529736.

The previous prime is 8157223. The next prime is 8157241. The reversal of 8157227 is 7227518.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7227518 = 2 ⋅3613759.

It is a cyclic number.

It is not a de Polignac number, because 8157227 - 2² = 8157223 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8157193 and 8157202.

It is not an unprimeable number, because it can be changed into a prime (8157221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 313727 + ... + 313752.

It is an arithmetic number, because the mean of its divisors is an integer number (2196180).

Almost surely, 2^8157227 is an apocalyptic number.

8157227 is a deficient number, since it is larger than the sum of its proper divisors (627493).

8157227 is a wasteful number, since it uses less digits than its factorization.

8157227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 627492.

The product of its digits is 7840, while the sum is 32.

The square root of 8157227 is about 2856.0859580902. The cubic root of 8157227 is about 201.3017340605.

The spelling of 8157227 in words is "eight million, one hundred fifty-seven thousand, two hundred twenty-seven".