133153441 has 4 divisors (see below), whose sum is σ = 133390512. Its totient is φ = 132916372.

The previous prime is 133153409. The next prime is 133153453. The reversal of 133153441 is 144351331.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 133153441 - 2⁵ = 133153409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133153541) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 117691 + ... + 118816.

It is an arithmetic number, because the mean of its divisors is an integer number (33347628).

Almost surely, 2^133153441 is an apocalyptic number.

It is an amenable number.

133153441 is a deficient number, since it is larger than the sum of its proper divisors (237071).

133153441 is an equidigital number, since it uses as much as digits as its factorization.

133153441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237070.

The product of its digits is 2160, while the sum is 25.

The square root of 133153441 is about 11539.2131880818. The cubic root of 133153441 is about 510.6430962037.

The spelling of 133153441 in words is "one hundred thirty-three million, one hundred fifty-three thousand, four hundred forty-one".