133522413 has 4 divisors (see below), whose sum is σ = 178029888. Its totient is φ = 89014940.

The previous prime is 133522399. The next prime is 133522453. The reversal of 133522413 is 314225331.

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 133522413 - 2⁸ = 133522157 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133522453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22253733 + ... + 22253738.

It is an arithmetic number, because the mean of its divisors is an integer number (44507472).

Almost surely, 2^133522413 is an apocalyptic number.

It is an amenable number.

133522413 is a deficient number, since it is larger than the sum of its proper divisors (44507475).

133522413 is an equidigital number, since it uses as much as digits as its factorization.

133522413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44507474.

The product of its digits is 2160, while the sum is 24.

The square root of 133522413 is about 11555.1898729532. The cubic root of 133522413 is about 511.1143300872.

Adding to 133522413 its reverse (314225331), we get a palindrome (447747744).

The spelling of 133522413 in words is "one hundred thirty-three million, five hundred twenty-two thousand, four hundred thirteen".