45540493 has 2 divisors, whose sum is σ = 45540494. Its totient is φ = 45540492.

The previous prime is 45540491. The next prime is 45540497. The reversal of 45540493 is 39404554.

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., 39980329 + 5560164 = 6323^2 + 2358^2 .

It is a cyclic number.

It is not a de Polignac number, because 45540493 - 2¹ = 45540491 is a prime.

Together with 45540491, 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 (45540491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22770246 + 22770247.

It is an arithmetic number, because the mean of its divisors is an integer number (22770247).

Almost surely, 2^45540493 is an apocalyptic number.

It is an amenable number.

45540493 is a deficient number, since it is larger than the sum of its proper divisors (1).

45540493 is an equidigital number, since it uses as much as digits as its factorization.

45540493 is an evil number, because the sum of its binary digits is even.

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

The square root of 45540493 is about 6748.3696549611. The cubic root of 45540493 is about 357.1077230123.

The spelling of 45540493 in words is "forty-five million, five hundred forty thousand, four hundred ninety-three".