545535561 has 8 divisors (see below), whose sum is σ = 727536160. Its totient is φ = 363612672.

The previous prime is 545535503. The next prime is 545535563. The reversal of 545535561 is 165535545.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 545535561 - 2⁷ = 545535433 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (545535563) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 376 + ... + 33033.

It is an arithmetic number, because the mean of its divisors is an integer number (90942020).

Almost surely, 2^545535561 is an apocalyptic number.

It is an amenable number.

545535561 is a deficient number, since it is larger than the sum of its proper divisors (182000599).

545535561 is a wasteful number, since it uses less digits than its factorization.

545535561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38855.

The product of its digits is 225000, while the sum is 39.

The square root of 545535561 is about 23356.7026996535. The cubic root of 545535561 is about 817.0983907708.

The spelling of 545535561 in words is "five hundred forty-five million, five hundred thirty-five thousand, five hundred sixty-one".