33420545 has 4 divisors (see below), whose sum is σ = 40104660. Its totient is φ = 26736432.

The previous prime is 33420523. The next prime is 33420547. The reversal of 33420545 is 54502433.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 24611521 + 8809024 = 4961^2 + 2968^2 .

It is a cyclic number.

It is not a de Polignac number, because 33420545 - 2¹⁶ = 33355009 is a prime.

It is a super-2 number, since 2×33420545² = 2233865656194050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (33420547) 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, 3342050 + ... + 3342059.

It is an arithmetic number, because the mean of its divisors is an integer number (10026165).

Almost surely, 2^33420545 is an apocalyptic number.

It is an amenable number.

33420545 is a deficient number, since it is larger than the sum of its proper divisors (6684115).

33420545 is an equidigital number, since it uses as much as digits as its factorization.

33420545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6684114.

The product of its (nonzero) digits is 7200, while the sum is 26.

The square root of 33420545 is about 5781.0505100717. The cubic root of 33420545 is about 322.1102235719.

Adding to 33420545 its reverse (54502433), we get a palindrome (87922978).

The spelling of 33420545 in words is "thirty-three million, four hundred twenty thousand, five hundred forty-five".