45281519 has 2 divisors, whose sum is σ = 45281520. Its totient is φ = 45281518.

The previous prime is 45281513. The next prime is 45281521. The reversal of 45281519 is 91518254.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 45281519 - 2⁸ = 45281263 is a prime.

It is a super-2 number, since 2×45281519² = 4100831925894722, which contains 22 as substring.

Together with 45281521, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45281513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22640759 + 22640760.

It is an arithmetic number, because the mean of its divisors is an integer number (22640760).

Almost surely, 2^45281519 is an apocalyptic number.

45281519 is a deficient number, since it is larger than the sum of its proper divisors (1).

45281519 is an equidigital number, since it uses as much as digits as its factorization.

45281519 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14400, while the sum is 35.

The square root of 45281519 is about 6729.1544045296. The cubic root of 45281519 is about 356.4295172398.

The spelling of 45281519 in words is "forty-five million, two hundred eighty-one thousand, five hundred nineteen".