133253445 has 16 divisors (see below), whose sum is σ = 229606272. Its totient is φ = 65601600.

The previous prime is 133253443. The next prime is 133253453. The reversal of 133253445 is 544352331.

It is not a de Polignac number, because 133253445 - 2¹ = 133253443 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133253443) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 341481 + ... + 341870.

It is an arithmetic number, because the mean of its divisors is an integer number (14350392).

Almost surely, 2^133253445 is an apocalyptic number.

133253445 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

133253445 is a deficient number, since it is larger than the sum of its proper divisors (96352827).

133253445 is a wasteful number, since it uses less digits than its factorization.

133253445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 683372.

The product of its digits is 21600, while the sum is 30.

The square root of 133253445 is about 11543.5455991649. The cubic root of 133253445 is about 510.7709025721.

The spelling of 133253445 in words is "one hundred thirty-three million, two hundred fifty-three thousand, four hundred forty-five".