45045493 has 2 divisors, whose sum is σ = 45045494. Its totient is φ = 45045492.

The previous prime is 45045491. The next prime is 45045509. The reversal of 45045493 is 39454054.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25623844 + 19421649 = 5062^2 + 4407^2 .

It is a cyclic number.

It is not a de Polignac number, because 45045493 - 2¹ = 45045491 is a prime.

It is a super-2 number, since 2×45045493² = 4058192879226098, which contains 22 as substring.

Together with 45045491, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45045491) 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, 22522746 + 22522747.

It is an arithmetic number, because the mean of its divisors is an integer number (22522747).

Almost surely, 2^45045493 is an apocalyptic number.

It is an amenable number.

45045493 is a deficient number, since it is larger than the sum of its proper divisors (1).

45045493 is an equidigital number, since it uses as much as digits as its factorization.

45045493 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 43200, while the sum is 34.

The square root of 45045493 is about 6711.5939239498. The cubic root of 45045493 is about 355.8091521148.

The spelling of 45045493 in words is "forty-five million, forty-five thousand, four hundred ninety-three".