541855261 has 4 divisors (see below), whose sum is σ = 542026300. Its totient is φ = 541684224.

The previous prime is 541855217. The next prime is 541855267. The reversal of 541855261 is 162558145.

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 221087161 + 320768100 = 14869^2 + 17910^2 .

It is a cyclic number.

It is not a de Polignac number, because 541855261 - 2¹⁵ = 541822493 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 541855261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (541855267) 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, 80676 + ... + 87133.

It is an arithmetic number, because the mean of its divisors is an integer number (135506575).

Almost surely, 2^541855261 is an apocalyptic number.

It is an amenable number.

541855261 is a deficient number, since it is larger than the sum of its proper divisors (171039).

541855261 is a wasteful number, since it uses less digits than its factorization.

541855261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171038.

The product of its digits is 48000, while the sum is 37.

The square root of 541855261 is about 23277.7847098902. The cubic root of 541855261 is about 815.2568029111.

The spelling of 541855261 in words is "five hundred forty-one million, eight hundred fifty-five thousand, two hundred sixty-one".