45008532281 has 2 divisors, whose sum is σ = 45008532282. Its totient is φ = 45008532280.

The previous prime is 45008532277. The next prime is 45008532293. The reversal of 45008532281 is 18223580054.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41711935225 + 3296597056 = 204235^2 + 57416^2 .

It is a cyclic number.

It is not a de Polignac number, because 45008532281 - 2² = 45008532277 is a prime.

It is a super-2 number, since 2×45008532281² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (45008532211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22504266140 + 22504266141.

It is an arithmetic number, because the mean of its divisors is an integer number (22504266141).

Almost surely, 2^45008532281 is an apocalyptic number.

It is an amenable number.

45008532281 is a deficient number, since it is larger than the sum of its proper divisors (1).

45008532281 is an equidigital number, since it uses as much as digits as its factorization.

45008532281 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 76800, while the sum is 38.

The spelling of 45008532281 in words is "forty-five billion, eight million, five hundred thirty-two thousand, two hundred eighty-one".