545555601 has 16 divisors (see below), whose sum is σ = 813589120. Its totient is φ = 361292400.

The previous prime is 545555587. The next prime is 545555611. The reversal of 545555601 is 106555545.

545555601 is a `hidden beast` number, since 5 + 45 + 5 + 5 + 5 + 601 = 666.

It is not a de Polignac number, because 545555601 - 2⁶ = 545555537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (545555611) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62830 + ... + 70983.

It is an arithmetic number, because the mean of its divisors is an integer number (50849320).

Almost surely, 2^545555601 is an apocalyptic number.

It is an amenable number.

545555601 is a deficient number, since it is larger than the sum of its proper divisors (268033519).

545555601 is a wasteful number, since it uses less digits than its factorization.

545555601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133973 (or 133967 counting only the distinct ones).

The product of its (nonzero) digits is 75000, while the sum is 36.

The square root of 545555601 is about 23357.1316946238. The cubic root of 545555601 is about 817.1083958938.

The spelling of 545555601 in words is "five hundred forty-five million, five hundred fifty-five thousand, six hundred one".