545570641 has 32 divisors (see below), whose sum is σ = 708454656. Its totient is φ = 407808000.

The previous prime is 545570633. The next prime is 545570659. The reversal of 545570641 is 146075545.

It is a happy number.

It is a 3-Lehmer number, since φ(545570641) divides (545570641-1)³.

It is a cyclic number.

It is a Carmichael number.

It is not a de Polignac number, because 545570641 - 2³ = 545570633 is a prime.

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a deceptive number, since it divides R_545570640.

It is a self number, because there is not a number n which added to its sum of digits gives 545570641.

It is not an unprimeable number, because it can be changed into a prime (545570611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 191161 + ... + 193993.

It is an arithmetic number, because the mean of its divisors is an integer number (22139208).

It is a Poulet number, since it divides 2^545570640-1.

Almost surely, 2^545570641 is an apocalyptic number.

It is an amenable number.

545570641 is a deficient number, since it is larger than the sum of its proper divisors (162884015).

545570641 is a wasteful number, since it uses less digits than its factorization.

545570641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2953.

The product of its (nonzero) digits is 84000, while the sum is 37.

The square root of 545570641 is about 23357.4536497453. The cubic root of 545570641 is about 817.1159045677.

The spelling of 545570641 in words is "five hundred forty-five million, five hundred seventy thousand, six hundred forty-one".