45081319 has 12 divisors (see below), whose sum is σ = 48609504. Its totient is φ = 41784192.

The previous prime is 45081313. The next prime is 45081383. The reversal of 45081319 is 91318054.

It is not a de Polignac number, because 45081319 - 2⁷ = 45081191 is a prime.

It is a super-2 number, since 2×45081319² = 4064650645559522, which contains 22 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 (45081313) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 15639 + ... + 18295.

It is an arithmetic number, because the mean of its divisors is an integer number (4050792).

Almost surely, 2^45081319 is an apocalyptic number.

45081319 is a deficient number, since it is larger than the sum of its proper divisors (3528185).

45081319 is a wasteful number, since it uses less digits than its factorization.

45081319 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2742 (or 2723 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 31.

The square root of 45081319 is about 6714.2623571022. The cubic root of 45081319 is about 355.9034555987.

The spelling of 45081319 in words is "forty-five million, eighty-one thousand, three hundred nineteen".