8216157 has 4 divisors (see below), whose sum is σ = 10954880. Its totient is φ = 5477436.

The previous prime is 8216149. The next prime is 8216161. The reversal of 8216157 is 7516128.

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 not a de Polignac number, because 8216157 - 2³ = 8216149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8216107) 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, 1369357 + ... + 1369362.

It is an arithmetic number, because the mean of its divisors is an integer number (2738720).

Almost surely, 2^8216157 is an apocalyptic number.

It is an amenable number.

8216157 is a deficient number, since it is larger than the sum of its proper divisors (2738723).

8216157 is a wasteful number, since it uses less digits than its factorization.

8216157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2738722.

The product of its digits is 3360, while the sum is 30.

The square root of 8216157 is about 2866.3839589280. The cubic root of 8216157 is about 201.7853240034.

The spelling of 8216157 in words is "eight million, two hundred sixteen thousand, one hundred fifty-seven".