545423719 has 2 divisors, whose sum is σ = 545423720. Its totient is φ = 545423718.

The previous prime is 545423717. The next prime is 545423731. The reversal of 545423719 is 917324545.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 545423719 - 2¹ = 545423717 is a prime.

It is a super-2 number, since 2×545423719² = 594974066495581922, which contains 22 as substring.

Together with 545423717, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (545423713) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 272711859 + 272711860.

It is an arithmetic number, because the mean of its divisors is an integer number (272711860).

Almost surely, 2^545423719 is an apocalyptic number.

545423719 is a deficient number, since it is larger than the sum of its proper divisors (1).

545423719 is an equidigital number, since it uses as much as digits as its factorization.

545423719 is an evil number, because the sum of its binary digits is even.

The product of its digits is 151200, while the sum is 40.

The square root of 545423719 is about 23354.3083605574. The cubic root of 545423719 is about 817.0425482980.

The spelling of 545423719 in words is "five hundred forty-five million, four hundred twenty-three thousand, seven hundred nineteen".