45133331 has 4 divisors (see below), whose sum is σ = 45220152. Its totient is φ = 45046512.

The previous prime is 45133321. The next prime is 45133343. The reversal of 45133331 is 13333154.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13333154 = 2 ⋅6666577.

It is a cyclic number.

It is not a de Polignac number, because 45133331 - 2⁶ = 45133267 is a prime.

It is a super-3 number, since 3×45133331³ (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 45133297 and 45133306.

It is not an unprimeable number, because it can be changed into a prime (45133321) 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, 42626 + ... + 43671.

It is an arithmetic number, because the mean of its divisors is an integer number (11305038).

Almost surely, 2^45133331 is an apocalyptic number.

45133331 is a deficient number, since it is larger than the sum of its proper divisors (86821).

45133331 is an equidigital number, since it uses as much as digits as its factorization.

45133331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86820.

The product of its digits is 1620, while the sum is 23.

The square root of 45133331 is about 6718.1344880852. The cubic root of 45133331 is about 356.0402760265.

Adding to 45133331 its reverse (13333154), we get a palindrome (58466485).

The spelling of 45133331 in words is "forty-five million, one hundred thirty-three thousand, three hundred thirty-one".