133406453 has 4 divisors (see below), whose sum is σ = 133437708. Its totient is φ = 133375200.

The previous prime is 133406443. The next prime is 133406473. The reversal of 133406453 is 354604331.

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 4765489 + 128640964 = 2183^2 + 11342^2 .

It is a cyclic number.

It is not a de Polignac number, because 133406453 - 2⁴ = 133406437 is a prime.

It is a super-3 number, since 3×133406453³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133406443) 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, 7976 + ... + 18177.

It is an arithmetic number, because the mean of its divisors is an integer number (33359427).

Almost surely, 2^133406453 is an apocalyptic number.

It is an amenable number.

133406453 is a deficient number, since it is larger than the sum of its proper divisors (31255).

133406453 is an equidigital number, since it uses as much as digits as its factorization.

133406453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31254.

The product of its (nonzero) digits is 12960, while the sum is 29.

The square root of 133406453 is about 11550.1711242734. The cubic root of 133406453 is about 510.9663250136.

The spelling of 133406453 in words is "one hundred thirty-three million, four hundred six thousand, four hundred fifty-three".