45085491 has 48 divisors (see below), whose sum is σ = 74850048. Its totient is φ = 26892000.

The previous prime is 45085483. The next prime is 45085511. The reversal of 45085491 is 19458054.

It is not a de Polignac number, because 45085491 - 2³ = 45085483 is a prime.

It is a super-2 number, since 2×45085491² = 4065402997422162, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (45085421) 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 47 ways as a sum of consecutive naturals, for example, 269890 + ... + 270056.

It is an arithmetic number, because the mean of its divisors is an integer number (1559376).

Almost surely, 2^45085491 is an apocalyptic number.

45085491 is a deficient number, since it is larger than the sum of its proper divisors (29764557).

45085491 is a wasteful number, since it uses less digits than its factorization.

45085491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 294 (or 282 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 36.

The square root of 45085491 is about 6714.5730318465. The cubic root of 45085491 is about 355.9144341551.

It can be divided in two parts, 4508 and 5491, that added together give a palindrome (9999).

The spelling of 45085491 in words is "forty-five million, eighty-five thousand, four hundred ninety-one".