545550541 has 4 divisors (see below), whose sum is σ = 547492284. Its totient is φ = 543608800.

The previous prime is 545550527. The next prime is 545550563. The reversal of 545550541 is 145055545.

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

It can be written as a sum of positive squares in 2 ways, for example, as 205922500 + 339628041 = 14350^2 + 18429^2 .

It is a cyclic number.

It is not a de Polignac number, because 545550541 - 2²⁵ = 511996109 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 545550497 and 545550506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (545550241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 970450 + ... + 971011.

It is an arithmetic number, because the mean of its divisors is an integer number (136873071).

Almost surely, 2^545550541 is an apocalyptic number.

It is an amenable number.

545550541 is a deficient number, since it is larger than the sum of its proper divisors (1941743).

545550541 is a wasteful number, since it uses less digits than its factorization.

545550541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1941742.

The product of its (nonzero) digits is 50000, while the sum is 34.

The square root of 545550541 is about 23357.0233762781. The cubic root of 545550541 is about 817.1058696733.

The spelling of 545550541 in words is "five hundred forty-five million, five hundred fifty thousand, five hundred forty-one".