45312719 has 2 divisors, whose sum is σ = 45312720. Its totient is φ = 45312718.

The previous prime is 45312713. The next prime is 45312763. The reversal of 45312719 is 91721354.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-45312719 is a prime.

It is a super-2 number, since 2×45312719² = 4106485006345922, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45312713) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22656359 + 22656360.

It is an arithmetic number, because the mean of its divisors is an integer number (22656360).

Almost surely, 2^45312719 is an apocalyptic number.

45312719 is a deficient number, since it is larger than the sum of its proper divisors (1).

45312719 is an equidigital number, since it uses as much as digits as its factorization.

45312719 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7560, while the sum is 32.

The square root of 45312719 is about 6731.4722758101. The cubic root of 45312719 is about 356.5113611358.

The spelling of 45312719 in words is "forty-five million, three hundred twelve thousand, seven hundred nineteen".