33121253 has 16 divisors (see below), whose sum is σ = 39299904. Its totient is φ = 27567360.

The previous prime is 33121247. The next prime is 33121271. The reversal of 33121253 is 35212133.

It is a cyclic number.

It is not a de Polignac number, because 33121253 - 2¹⁰ = 33120229 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33121213) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4526 + ... + 9312.

It is an arithmetic number, because the mean of its divisors is an integer number (2456244).

Almost surely, 2^33121253 is an apocalyptic number.

It is an amenable number.

33121253 is a deficient number, since it is larger than the sum of its proper divisors (6178651).

33121253 is a wasteful number, since it uses less digits than its factorization.

33121253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4852.

The product of its digits is 540, while the sum is 20.

The square root of 33121253 is about 5755.1066888460. The cubic root of 33121253 is about 321.1458045002.

Adding to 33121253 its reverse (35212133), we get a palindrome (68333386).

The spelling of 33121253 in words is "thirty-three million, one hundred twenty-one thousand, two hundred fifty-three".