33243157 has 2 divisors, whose sum is σ = 33243158. Its totient is φ = 33243156.

The previous prime is 33243097. The next prime is 33243167. The reversal of 33243157 is 75134233.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19766916 + 13476241 = 4446^2 + 3671^2 .

It is a cyclic number.

It is not a de Polignac number, because 33243157 - 2¹⁹ = 32718869 is a prime.

It is a super-2 number, since 2×33243157² = 2210214974653298, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (33243167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16621578 + 16621579.

It is an arithmetic number, because the mean of its divisors is an integer number (16621579).

Almost surely, 2^33243157 is an apocalyptic number.

It is an amenable number.

33243157 is a deficient number, since it is larger than the sum of its proper divisors (1).

33243157 is an equidigital number, since it uses as much as digits as its factorization.

33243157 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7560, while the sum is 28.

The square root of 33243157 is about 5765.6879034509. The cubic root of 33243157 is about 321.5393184613.

The spelling of 33243157 in words is "thirty-three million, two hundred forty-three thousand, one hundred fifty-seven".