33223557 has 8 divisors (see below), whose sum is σ = 44339040. Its totient is φ = 22128560.

The previous prime is 33223517. The next prime is 33223583. The reversal of 33223557 is 75532233.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 33223557 - 2⁷ = 33223429 is a prime.

It is a super-2 number, since 2×33223557² = 2207609479464498, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33223507) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 819 + ... + 8192.

It is an arithmetic number, because the mean of its divisors is an integer number (5542380).

Almost surely, 2^33223557 is an apocalyptic number.

It is an amenable number.

33223557 is a deficient number, since it is larger than the sum of its proper divisors (11115483).

33223557 is a wasteful number, since it uses less digits than its factorization.

33223557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10243.

The product of its digits is 18900, while the sum is 30.

The square root of 33223557 is about 5763.9879423885. The cubic root of 33223557 is about 321.4761133770.

The spelling of 33223557 in words is "thirty-three million, two hundred twenty-three thousand, five hundred fifty-seven".