133524445 has 4 divisors (see below), whose sum is σ = 160229340. Its totient is φ = 106819552.

The previous prime is 133524421. The next prime is 133524449. The reversal of 133524445 is 544425331.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 69939769 + 63584676 = 8363^2 + 7974^2 .

It is a cyclic number.

It is not a de Polignac number, because 133524445 - 2¹⁹ = 133000157 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133524449) 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, 13352440 + ... + 13352449.

It is an arithmetic number, because the mean of its divisors is an integer number (40057335).

Almost surely, 2^133524445 is an apocalyptic number.

It is an amenable number.

133524445 is a deficient number, since it is larger than the sum of its proper divisors (26704895).

133524445 is an equidigital number, since it uses as much as digits as its factorization.

133524445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26704894.

The product of its digits is 28800, while the sum is 31.

The square root of 133524445 is about 11555.2777984781. The cubic root of 133524445 is about 511.1169228580.

Adding to 133524445 its reverse (544425331), we get a palindrome (677949776).

The spelling of 133524445 in words is "one hundred thirty-three million, five hundred twenty-four thousand, four hundred forty-five".