8223157 has 2 divisors, whose sum is σ = 8223158. Its totient is φ = 8223156.

The previous prime is 8223133. The next prime is 8223169. The reversal of 8223157 is 7513228.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8145316 + 77841 = 2854^2 + 279^2 .

It is a cyclic number.

It is not a de Polignac number, because 8223157 - 2¹⁹ = 7698869 is a prime.

It is a super-2 number, since 2×8223157² = 135240622093298, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8223107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4111578 + 4111579.

It is an arithmetic number, because the mean of its divisors is an integer number (4111579).

Almost surely, 2^8223157 is an apocalyptic number.

It is an amenable number.

8223157 is a deficient number, since it is larger than the sum of its proper divisors (1).

8223157 is an equidigital number, since it uses as much as digits as its factorization.

8223157 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3360, while the sum is 28.

The square root of 8223157 is about 2867.6047496125. The cubic root of 8223157 is about 201.8426134117.

The spelling of 8223157 in words is "eight million, two hundred twenty-three thousand, one hundred fifty-seven".