33145351 has 4 divisors (see below), whose sum is σ = 33166312. Its totient is φ = 33124392.

The previous prime is 33145339. The next prime is 33145379. The reversal of 33145351 is 15354133.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 33145351 - 2¹⁹ = 32621063 is a prime.

It is a super-2 number, since 2×33145351² = 2197228585826402, 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 (33145331) 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 3 ways as a sum of consecutive naturals, for example, 7896 + ... + 11341.

It is an arithmetic number, because the mean of its divisors is an integer number (8291578).

Almost surely, 2^33145351 is an apocalyptic number.

33145351 is a deficient number, since it is larger than the sum of its proper divisors (20961).

33145351 is a wasteful number, since it uses less digits than its factorization.

33145351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20960.

The product of its digits is 2700, while the sum is 25.

The square root of 33145351 is about 5757.1999270479. The cubic root of 33145351 is about 321.2236708728.

Adding to 33145351 its reverse (15354133), we get a palindrome (48499484).

The spelling of 33145351 in words is "thirty-three million, one hundred forty-five thousand, three hundred fifty-one".