133452641 has 4 divisors (see below), whose sum is σ = 152517312. Its totient is φ = 114387972.

The previous prime is 133452623. The next prime is 133452667. The reversal of 133452641 is 146254331.

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, and also an emirpimes, since its reverse is a distinct semiprime: 146254331 = 257 ⋅569083.

It is a cyclic number.

It is not a de Polignac number, because 133452641 - 2²⁶ = 66343777 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (133452611) 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, 9532325 + ... + 9532338.

It is an arithmetic number, because the mean of its divisors is an integer number (38129328).

Almost surely, 2^133452641 is an apocalyptic number.

It is an amenable number.

133452641 is a deficient number, since it is larger than the sum of its proper divisors (19064671).

133452641 is an equidigital number, since it uses as much as digits as its factorization.

133452641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19064670.

The product of its digits is 8640, while the sum is 29.

The square root of 133452641 is about 11552.1704021366. The cubic root of 133452641 is about 511.0252871526.

The spelling of 133452641 in words is "one hundred thirty-three million, four hundred fifty-two thousand, six hundred forty-one".