133453405 has 4 divisors (see below), whose sum is σ = 160144092. Its totient is φ = 106762720.

The previous prime is 133453399. The next prime is 133453427. The reversal of 133453405 is 504354331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 504354331 = 13 ⋅38796487.

It can be written as a sum of positive squares in 2 ways, for example, as 104325796 + 29127609 = 10214^2 + 5397^2 .

It is not a de Polignac number, because 133453405 - 2⁵ = 133453373 is a prime.

It is a super-2 number, since 2×133453405² = 35619622612188050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13345336 + ... + 13345345.

It is an arithmetic number, because the mean of its divisors is an integer number (40036023).

Almost surely, 2^133453405 is an apocalyptic number.

It is an amenable number.

133453405 is a deficient number, since it is larger than the sum of its proper divisors (26690687).

133453405 is an equidigital number, since it uses as much as digits as its factorization.

133453405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26690686.

The product of its (nonzero) digits is 10800, while the sum is 28.

The square root of 133453405 is about 11552.2034694685. The cubic root of 133453405 is about 511.0262623364.

The spelling of 133453405 in words is "one hundred thirty-three million, four hundred fifty-three thousand, four hundred five".