545897393 has 2 divisors, whose sum is σ = 545897394. Its totient is φ = 545897392.

The previous prime is 545897351. The next prime is 545897399. The reversal of 545897393 is 393798545.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 445336609 + 100560784 = 21103^2 + 10028^2 .

It is a cyclic number.

It is not a de Polignac number, because 545897393 - 2²⁴ = 529120177 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (545897399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 272948696 + 272948697.

It is an arithmetic number, because the mean of its divisors is an integer number (272948697).

Almost surely, 2^545897393 is an apocalyptic number.

It is an amenable number.

545897393 is a deficient number, since it is larger than the sum of its proper divisors (1).

545897393 is an equidigital number, since it uses as much as digits as its factorization.

545897393 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4082400, while the sum is 53.

The square root of 545897393 is about 23364.4472008220. The cubic root of 545897393 is about 817.2790004476.

The spelling of 545897393 in words is "five hundred forty-five million, eight hundred ninety-seven thousand, three hundred ninety-three".