545456566 has 4 divisors (see below), whose sum is σ = 818184852. Its totient is φ = 272728282.

The previous prime is 545456533. The next prime is 545456567. The reversal of 545456566 is 665654545.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (545456567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 136364140 + ... + 136364143.

It is an arithmetic number, because the mean of its divisors is an integer number (204546213).

Almost surely, 2^545456566 is an apocalyptic number.

545456566 is a deficient number, since it is larger than the sum of its proper divisors (272728286).

545456566 is a wasteful number, since it uses less digits than its factorization.

545456566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272728285.

The product of its digits is 2160000, while the sum is 46.

The square root of 545456566 is about 23355.0115820995. The cubic root of 545456566 is about 817.0589495270.

The spelling of 545456566 in words is "five hundred forty-five million, four hundred fifty-six thousand, five hundred sixty-six".