133611145 has 16 divisors (see below), whose sum is σ = 163829952. Its totient is φ = 104569920.

The previous prime is 133611133. The next prime is 133611157. The reversal of 133611145 is 541116331.

133611145 = T₄₆ + T₄₇ + ... + T₉₂₈.

It is an interprime number because it is at equal distance from previous prime (133611133) and next prime (133611157).

It is not a de Polignac number, because 133611145 - 2⁷ = 133611017 is a prime.

It is a super-2 number, since 2×133611145² = 35703876136422050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 150874 + ... + 151756.

It is an arithmetic number, because the mean of its divisors is an integer number (10239372).

Almost surely, 2^133611145 is an apocalyptic number.

It is an amenable number.

133611145 is a deficient number, since it is larger than the sum of its proper divisors (30218807).

133611145 is an equidigital number, since it uses as much as digits as its factorization.

133611145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1512.

The product of its digits is 1080, while the sum is 25.

The square root of 133611145 is about 11559.0287221721. The cubic root of 133611145 is about 511.2275249514.

Adding to 133611145 its reverse (541116331), we get a palindrome (674727476).

The spelling of 133611145 in words is "one hundred thirty-three million, six hundred eleven thousand, one hundred forty-five".