45133409 has 4 divisors (see below), whose sum is σ = 45158916. Its totient is φ = 45107904.

The previous prime is 45133397. The next prime is 45133433. The reversal of 45133409 is 90433154.

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 20729809 + 24403600 = 4553^2 + 4940^2 .

It is a cyclic number.

It is not a de Polignac number, because 45133409 - 2⁴ = 45133393 is a prime.

It is a super-2 number, since 2×45133409² = 4074049215922562, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (45133499) 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, 9884 + ... + 13709.

It is an arithmetic number, because the mean of its divisors is an integer number (11289729).

Almost surely, 2^45133409 is an apocalyptic number.

It is an amenable number.

45133409 is a deficient number, since it is larger than the sum of its proper divisors (25507).

45133409 is a wasteful number, since it uses less digits than its factorization.

45133409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25506.

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 45133409 is about 6718.1402932657. The cubic root of 45133409 is about 356.0404811308.

The spelling of 45133409 in words is "forty-five million, one hundred thirty-three thousand, four hundred nine".