45031081 has 2 divisors, whose sum is σ = 45031082. Its totient is φ = 45031080.

The previous prime is 45031073. The next prime is 45031099. The reversal of 45031081 is 18013054.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41718681 + 3312400 = 6459^2 + 1820^2 .

It is a cyclic number.

It is not a de Polignac number, because 45031081 - 2³ = 45031073 is a prime.

It is a super-2 number, since 2×45031081² = 4055596512057122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (45034081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22515540 + 22515541.

It is an arithmetic number, because the mean of its divisors is an integer number (22515541).

Almost surely, 2^45031081 is an apocalyptic number.

It is an amenable number.

45031081 is a deficient number, since it is larger than the sum of its proper divisors (1).

45031081 is an equidigital number, since it uses as much as digits as its factorization.

45031081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 45031081 is about 6710.5201735782. The cubic root of 45031081 is about 355.7712018255.

The spelling of 45031081 in words is "forty-five million, thirty-one thousand, eighty-one".