133001441 has 4 divisors (see below), whose sum is σ = 134603952. Its totient is φ = 131398932.

The previous prime is 133001419. The next prime is 133001459. The reversal of 133001441 is 144100331.

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: 144100331 = 3691 ⋅39041.

It is a cyclic number.

It is not a de Polignac number, because 133001441 - 2¹⁸ = 132739297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133001461) 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, 801131 + ... + 801296.

It is an arithmetic number, because the mean of its divisors is an integer number (33650988).

Almost surely, 2^133001441 is an apocalyptic number.

It is an amenable number.

133001441 is a deficient number, since it is larger than the sum of its proper divisors (1602511).

133001441 is an equidigital number, since it uses as much as digits as its factorization.

133001441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1602510.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 133001441 is about 11532.6250697749. The cubic root of 133001441 is about 510.4487156871.

Adding to 133001441 its reverse (144100331), we get a palindrome (277101772).

It can be divided in two parts, 13300 and 1441, that added together give a palindrome (14741).

The spelling of 133001441 in words is "one hundred thirty-three million, one thousand, four hundred forty-one".