545423657 has 2 divisors, whose sum is σ = 545423658. Its totient is φ = 545423656.

The previous prime is 545423651. The next prime is 545423707. The reversal of 545423657 is 756324545.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 458859241 + 86564416 = 21421^2 + 9304^2 .

It is a cyclic number.

It is not a de Polignac number, because 545423657 - 2¹² = 545419561 is a prime.

It is not a weakly prime, because it can be changed into another prime (545423651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 272711828 + 272711829.

It is an arithmetic number, because the mean of its divisors is an integer number (272711829).

Almost surely, 2^545423657 is an apocalyptic number.

It is an amenable number.

545423657 is a deficient number, since it is larger than the sum of its proper divisors (1).

545423657 is an equidigital number, since it uses as much as digits as its factorization.

545423657 is an evil number, because the sum of its binary digits is even.

The product of its digits is 504000, while the sum is 41.

The square root of 545423657 is about 23354.3070331791. The cubic root of 545423657 is about 817.0425173395.

The spelling of 545423657 in words is "five hundred forty-five million, four hundred twenty-three thousand, six hundred fifty-seven".