33228457 has 2 divisors, whose sum is σ = 33228458. Its totient is φ = 33228456.

The previous prime is 33228443. The next prime is 33228463. The reversal of 33228457 is 75482233.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 33223696 + 4761 = 5764^2 + 69^2 .

It is a cyclic number.

It is not a de Polignac number, because 33228457 - 2⁷ = 33228329 is a prime.

It is a super-2 number, since 2×33228457² = 2208260709201698, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (33228857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16614228 + 16614229.

It is an arithmetic number, because the mean of its divisors is an integer number (16614229).

Almost surely, 2^33228457 is an apocalyptic number.

It is an amenable number.

33228457 is a deficient number, since it is larger than the sum of its proper divisors (1).

33228457 is an equidigital number, since it uses as much as digits as its factorization.

33228457 is an evil number, because the sum of its binary digits is even.

The product of its digits is 40320, while the sum is 34.

The square root of 33228457 is about 5764.4129796537. The cubic root of 33228457 is about 321.4919169780.

The spelling of 33228457 in words is "thirty-three million, two hundred twenty-eight thousand, four hundred fifty-seven".