541566061 has 4 divisors (see below), whose sum is σ = 549193824. Its totient is φ = 533938300.

The previous prime is 541566043. The next prime is 541566071. The reversal of 541566061 is 160665145.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 160665145 = 5 ⋅32133029.

It is a cyclic number.

It is not a de Polignac number, because 541566061 - 2⁵ = 541566029 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (541566041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3813775 + ... + 3813916.

It is an arithmetic number, because the mean of its divisors is an integer number (137298456).

Almost surely, 2^541566061 is an apocalyptic number.

It is an amenable number.

541566061 is a deficient number, since it is larger than the sum of its proper divisors (7627763).

541566061 is an equidigital number, since it uses as much as digits as its factorization.

541566061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7627762.

The product of its (nonzero) digits is 21600, while the sum is 34.

The square root of 541566061 is about 23271.5719494838. The cubic root of 541566061 is about 815.1117369729. Note that the first 3 decimals are identical.

The spelling of 541566061 in words is "five hundred forty-one million, five hundred sixty-six thousand, sixty-one".