33055540 has 24 divisors (see below), whose sum is σ = 79333632. Its totient is φ = 11333280.

The previous prime is 33055537. The next prime is 33055543. The reversal of 33055540 is 4555033.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (33055537) and next prime (33055543).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33055543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 117916 + ... + 118195.

It is an arithmetic number, because the mean of its divisors is an integer number (3305568).

Almost surely, 2^33055540 is an apocalyptic number.

It is an amenable number.

33055540 is an abundant number, since it is smaller than the sum of its proper divisors (46278092).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

33055540 is a wasteful number, since it uses less digits than its factorization.

33055540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236127 (or 236125 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 25.

The square root of 33055540 is about 5749.3947507542. The cubic root of 33055540 is about 320.9332780582.

The spelling of 33055540 in words is "thirty-three million, fifty-five thousand, five hundred forty".