45040493 has 2 divisors, whose sum is σ = 45040494. Its totient is φ = 45040492.

The previous prime is 45040487. The next prime is 45040519. The reversal of 45040493 is 39404054.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 44983849 + 56644 = 6707^2 + 238^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-45040493 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45040403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22520246 + 22520247.

It is an arithmetic number, because the mean of its divisors is an integer number (22520247).

Almost surely, 2^45040493 is an apocalyptic number.

It is an amenable number.

45040493 is a deficient number, since it is larger than the sum of its proper divisors (1).

45040493 is an equidigital number, since it uses as much as digits as its factorization.

45040493 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 45040493 is about 6711.2214238542. The cubic root of 45040493 is about 355.7959868200.

The spelling of 45040493 in words is "forty-five million, forty thousand, four hundred ninety-three".