133445473 has 12 divisors (see below), whose sum is σ = 155980272. Its totient is φ = 113830920.

The previous prime is 133445449. The next prime is 133445497. The reversal of 133445473 is 374544331.

It is an interprime number because it is at equal distance from previous prime (133445449) and next prime (133445497).

It is a de Polignac number, because none of the positive numbers 2^k-133445473 is a prime.

It is not an unprimeable number, because it can be changed into a prime (133445413) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3886 + ... + 16792.

It is an arithmetic number, because the mean of its divisors is an integer number (12998356).

Almost surely, 2^133445473 is an apocalyptic number.

It is an amenable number.

133445473 is a deficient number, since it is larger than the sum of its proper divisors (22534799).

133445473 is a wasteful number, since it uses less digits than its factorization.

133445473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13132 (or 13125 counting only the distinct ones).

The product of its digits is 60480, while the sum is 34.

The square root of 133445473 is about 11551.8601532394. The cubic root of 133445473 is about 511.0161376026.

The spelling of 133445473 in words is "one hundred thirty-three million, four hundred forty-five thousand, four hundred seventy-three".