545423407 has 2 divisors, whose sum is σ = 545423408. Its totient is φ = 545423406.

The previous prime is 545423399. The next prime is 545423429. The reversal of 545423407 is 704324545.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 545423407 - 2³ = 545423399 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (545423447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 272711703 + 272711704.

It is an arithmetic number, because the mean of its divisors is an integer number (272711704).

Almost surely, 2^545423407 is an apocalyptic number.

545423407 is a deficient number, since it is larger than the sum of its proper divisors (1).

545423407 is an equidigital number, since it uses as much as digits as its factorization.

545423407 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 67200, while the sum is 34.

The square root of 545423407 is about 23354.3016808467. The cubic root of 545423407 is about 817.0423925064.

The spelling of 545423407 in words is "five hundred forty-five million, four hundred twenty-three thousand, four hundred seven".