45217279 has 2 divisors, whose sum is σ = 45217280. Its totient is φ = 45217278.

The previous prime is 45217267. The next prime is 45217307. The reversal of 45217279 is 97271254.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 45217279 - 2⁵ = 45217247 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45217259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22608639 + 22608640.

It is an arithmetic number, because the mean of its divisors is an integer number (22608640).

Almost surely, 2^45217279 is an apocalyptic number.

45217279 is a deficient number, since it is larger than the sum of its proper divisors (1).

45217279 is an equidigital number, since it uses as much as digits as its factorization.

45217279 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 35280, while the sum is 37.

The square root of 45217279 is about 6724.3794509233. The cubic root of 45217279 is about 356.2608842884.

The spelling of 45217279 in words is "forty-five million, two hundred seventeen thousand, two hundred seventy-nine".