545420399 has 2 divisors, whose sum is σ = 545420400. Its totient is φ = 545420398.

The previous prime is 545420347. The next prime is 545420411. The reversal of 545420399 is 993024545.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 545420399 - 2⁸ = 545420143 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (545420599) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 272710199 + 272710200.

It is an arithmetic number, because the mean of its divisors is an integer number (272710200).

Almost surely, 2^545420399 is an apocalyptic number.

545420399 is a deficient number, since it is larger than the sum of its proper divisors (1).

545420399 is an equidigital number, since it uses as much as digits as its factorization.

545420399 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 194400, while the sum is 41.

The square root of 545420399 is about 23354.2372814871. The cubic root of 545420399 is about 817.0408905124.

The spelling of 545420399 in words is "five hundred forty-five million, four hundred twenty thousand, three hundred ninety-nine".