45445481 has 4 divisors (see below), whose sum is σ = 45478212. Its totient is φ = 45412752.

The previous prime is 45445459. The next prime is 45445501. The reversal of 45445481 is 18454454.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 18454454 = 2 ⋅9227227.

It can be written as a sum of positive squares in 2 ways, for example, as 37515625 + 7929856 = 6125^2 + 2816^2 .

It is a cyclic number.

It is not a de Polignac number, because 45445481 - 2⁶ = 45445417 is a prime.

It is a super-2 number, since 2×45445481² = 4130583486642722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45445441) 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, 14186 + ... + 17091.

It is an arithmetic number, because the mean of its divisors is an integer number (11369553).

Almost surely, 2^45445481 is an apocalyptic number.

It is an amenable number.

45445481 is a deficient number, since it is larger than the sum of its proper divisors (32731).

45445481 is a wasteful number, since it uses less digits than its factorization.

45445481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32730.

The product of its digits is 51200, while the sum is 35.

The square root of 45445481 is about 6741.3263531741. The cubic root of 45445481 is about 356.8592032148.

The spelling of 45445481 in words is "forty-five million, four hundred forty-five thousand, four hundred eighty-one".