33057213 has 24 divisors (see below), whose sum is σ = 52252128. Its totient is φ = 18529056.

The previous prime is 33057161. The next prime is 33057217. The reversal of 33057213 is 31275033.

It is not a de Polignac number, because 33057213 - 2¹⁷ = 32926141 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33057217) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5670 + ... + 9912.

It is an arithmetic number, because the mean of its divisors is an integer number (2177172).

Almost surely, 2^33057213 is an apocalyptic number.

It is an amenable number.

33057213 is a deficient number, since it is larger than the sum of its proper divisors (19194915).

33057213 is a wasteful number, since it uses less digits than its factorization.

33057213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4313 (or 4306 counting only the distinct ones).

The product of its (nonzero) digits is 1890, while the sum is 24.

The square root of 33057213 is about 5749.5402424890. The cubic root of 33057213 is about 320.9386923026.

The spelling of 33057213 in words is "thirty-three million, fifty-seven thousand, two hundred thirteen".