545622397 has 2 divisors, whose sum is σ = 545622398. Its totient is φ = 545622396.

The previous prime is 545622349. The next prime is 545622403. The reversal of 545622397 is 793226545.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 423166041 + 122456356 = 20571^2 + 11066^2 .

It is a cyclic number.

It is not a de Polignac number, because 545622397 - 2²³ = 537233789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (545622317) 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, 272811198 + 272811199.

It is an arithmetic number, because the mean of its divisors is an integer number (272811199).

Almost surely, 2^545622397 is an apocalyptic number.

It is an amenable number.

545622397 is a deficient number, since it is larger than the sum of its proper divisors (1).

545622397 is an equidigital number, since it uses as much as digits as its factorization.

545622397 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 453600, while the sum is 43.

The square root of 545622397 is about 23358.5615353343. The cubic root of 545622397 is about 817.1417425377.

The spelling of 545622397 in words is "five hundred forty-five million, six hundred twenty-two thousand, three hundred ninety-seven".