45991243 has 2 divisors, whose sum is σ = 45991244. Its totient is φ = 45991242.

The previous prime is 45991223. The next prime is 45991247. The reversal of 45991243 is 34219954.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 45991243 - 2¹³ = 45983051 is a prime.

It is not a weakly prime, because it can be changed into another prime (45991247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22995621 + 22995622.

It is an arithmetic number, because the mean of its divisors is an integer number (22995622).

Almost surely, 2^45991243 is an apocalyptic number.

45991243 is a deficient number, since it is larger than the sum of its proper divisors (1).

45991243 is an equidigital number, since it uses as much as digits as its factorization.

45991243 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 38880, while the sum is 37.

The square root of 45991243 is about 6781.6843777929. The cubic root of 45991243 is about 358.2820488831.

The spelling of 45991243 in words is "forty-five million, nine hundred ninety-one thousand, two hundred forty-three".