45481081 has 2 divisors, whose sum is σ = 45481082. Its totient is φ = 45481080.

The previous prime is 45481063. The next prime is 45481147. The reversal of 45481081 is 18018454.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 45441081 + 40000 = 6741^2 + 200^2 .

It is a cyclic number.

It is not a de Polignac number, because 45481081 - 2⁹ = 45480569 is a prime.

It is a super-2 number, since 2×45481081² = 4137057457857122, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (45481781) 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 as a sum of consecutive naturals, namely, 22740540 + 22740541.

It is an arithmetic number, because the mean of its divisors is an integer number (22740541).

Almost surely, 2^45481081 is an apocalyptic number.

It is an amenable number.

45481081 is a deficient number, since it is larger than the sum of its proper divisors (1).

45481081 is an equidigital number, since it uses as much as digits as its factorization.

45481081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5120, while the sum is 31.

The square root of 45481081 is about 6743.9662662264. The cubic root of 45481081 is about 356.9523615186.

The spelling of 45481081 in words is "forty-five million, four hundred eighty-one thousand, eighty-one".