33242509 has 4 divisors (see below), whose sum is σ = 34314880. Its totient is φ = 32170140.

The previous prime is 33242507. The next prime is 33242549. The reversal of 33242509 is 90524233.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 33242509 - 2¹ = 33242507 is a prime.

It is a super-2 number, since 2×33242509² = 2210128809230162, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33242507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 536139 + ... + 536200.

It is an arithmetic number, because the mean of its divisors is an integer number (8578720).

Almost surely, 2^33242509 is an apocalyptic number.

It is an amenable number.

33242509 is a deficient number, since it is larger than the sum of its proper divisors (1072371).

33242509 is a wasteful number, since it uses less digits than its factorization.

33242509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1072370.

The product of its (nonzero) digits is 6480, while the sum is 28.

The square root of 33242509 is about 5765.6317086682. The cubic root of 33242509 is about 321.5372292210.

The spelling of 33242509 in words is "thirty-three million, two hundred forty-two thousand, five hundred nine".