33545389 has 2 divisors, whose sum is σ = 33545390. Its totient is φ = 33545388.

The previous prime is 33545383. The next prime is 33545401. The reversal of 33545389 is 98354533.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19980900 + 13564489 = 4470^2 + 3683^2 .

It is a cyclic number.

It is not a de Polignac number, because 33545389 - 2³ = 33545381 is a prime.

It is a super-2 number, since 2×33545389² = 2250586246322642, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (33545381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16772694 + 16772695.

It is an arithmetic number, because the mean of its divisors is an integer number (16772695).

Almost surely, 2^33545389 is an apocalyptic number.

It is an amenable number.

33545389 is a deficient number, since it is larger than the sum of its proper divisors (1).

33545389 is an equidigital number, since it uses as much as digits as its factorization.

33545389 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 194400, while the sum is 40.

The square root of 33545389 is about 5791.8381365504. The cubic root of 33545389 is about 322.5108110872.

The spelling of 33545389 in words is "thirty-three million, five hundred forty-five thousand, three hundred eighty-nine".