541563261 has 4 divisors (see below), whose sum is σ = 722084352. Its totient is φ = 361042172.

The previous prime is 541563257. The next prime is 541563263. The reversal of 541563261 is 162365145.

541563261 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 541563261 - 2² = 541563257 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (541563263) 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, 90260541 + ... + 90260546.

It is an arithmetic number, because the mean of its divisors is an integer number (180521088).

Almost surely, 2^541563261 is an apocalyptic number.

It is an amenable number.

541563261 is a deficient number, since it is larger than the sum of its proper divisors (180521091).

541563261 is a wasteful number, since it uses less digits than its factorization.

541563261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180521090.

The product of its digits is 21600, while the sum is 33.

The square root of 541563261 is about 23271.5117901695. The cubic root of 541563261 is about 815.1103322093.

The spelling of 541563261 in words is "five hundred forty-one million, five hundred sixty-three thousand, two hundred sixty-one".