541669945 has 4 divisors (see below), whose sum is σ = 650003940. Its totient is φ = 433335952.

The previous prime is 541669943. The next prime is 541669951. The reversal of 541669945 is 549966145.

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 299151616 + 242518329 = 17296^2 + 15573^2 .

It is a cyclic number.

It is not a de Polignac number, because 541669945 - 2¹ = 541669943 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (541669943) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54166990 + ... + 54166999.

It is an arithmetic number, because the mean of its divisors is an integer number (162500985).

Almost surely, 2^541669945 is an apocalyptic number.

It is an amenable number.

541669945 is a deficient number, since it is larger than the sum of its proper divisors (108333995).

541669945 is a wasteful number, since it uses less digits than its factorization.

541669945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108333994.

The product of its digits is 1166400, while the sum is 49.

The square root of 541669945 is about 23273.8038360729. The cubic root of 541669945 is about 815.1638522856.

The spelling of 541669945 in words is "five hundred forty-one million, six hundred sixty-nine thousand, nine hundred forty-five".