33151145 has 4 divisors (see below), whose sum is σ = 39781380. Its totient is φ = 26520912.

The previous prime is 33151109. The next prime is 33151163. The reversal of 33151145 is 54115133.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54115133 = 983 ⋅55051.

It can be written as a sum of positive squares in 2 ways, for example, as 14167696 + 18983449 = 3764^2 + 4357^2 .

It is a cyclic number.

It is not a de Polignac number, because 33151145 - 2¹⁰ = 33150121 is a prime.

It is a super-2 number, since 2×33151145² = 2197996829622050, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 33151145.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3315110 + ... + 3315119.

It is an arithmetic number, because the mean of its divisors is an integer number (9945345).

Almost surely, 2^33151145 is an apocalyptic number.

It is an amenable number.

33151145 is a deficient number, since it is larger than the sum of its proper divisors (6630235).

33151145 is an equidigital number, since it uses as much as digits as its factorization.

33151145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6630234.

The product of its digits is 900, while the sum is 23.

The square root of 33151145 is about 5757.7031010638. The cubic root of 33151145 is about 321.2423870372.

Adding to 33151145 its reverse (54115133), we get a palindrome (87266278).

The spelling of 33151145 in words is "thirty-three million, one hundred fifty-one thousand, one hundred forty-five".