45319 has 2 divisors, whose sum is σ = 45320. Its totient is φ = 45318.

The previous prime is 45317. The next prime is 45329. The reversal of 45319 is 91354.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 45319 - 2¹ = 45317 is a prime.

It is a super-2 number, since 2×45319² = 4107623522, which contains 22 as substring.

Together with 45317, it forms a pair of twin primes.

It is a Chen prime.

It is a nialpdrome in base 15.

It is a self number, because there is not a number n which added to its sum of digits gives 45319.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22659 + 22660.

It is an arithmetic number, because the mean of its divisors is an integer number (22660).

2⁴⁵³¹⁹ is an apocalyptic number.

45319 is a deficient number, since it is larger than the sum of its proper divisors (1).

45319 is an equidigital number, since it uses as much as digits as its factorization.

45319 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 540, while the sum is 22.

The square root of 45319 is about 212.8825967523. The cubic root of 45319 is about 35.6527832923.

The spelling of 45319 in words is "forty-five thousand, three hundred nineteen".