541205645 has 4 divisors (see below), whose sum is σ = 649446780. Its totient is φ = 432964512.

The previous prime is 541205597. The next prime is 541205669. The reversal of 541205645 is 546502145.

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 358496356 + 182709289 = 18934^2 + 13517^2 .

It is a cyclic number.

It is not a de Polignac number, because 541205645 - 2¹⁰ = 541204621 is a prime.

It is a super-3 number, since 3×541205645³ (a number of 27 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54120560 + ... + 54120569.

It is an arithmetic number, because the mean of its divisors is an integer number (162361695).

Almost surely, 2^541205645 is an apocalyptic number.

It is an amenable number.

541205645 is a deficient number, since it is larger than the sum of its proper divisors (108241135).

541205645 is a wasteful number, since it uses less digits than its factorization.

541205645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108241134.

The product of its (nonzero) digits is 24000, while the sum is 32.

The square root of 541205645 is about 23263.8269637650. The cubic root of 541205645 is about 814.9308759922.

The spelling of 541205645 in words is "five hundred forty-one million, two hundred five thousand, six hundred forty-five".