541261 has 4 divisors (see below), whose sum is σ = 618592. Its totient is φ = 463932.

The previous prime is 541249. The next prime is 541267. The reversal of 541261 is 162145.

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: 162145 = 5 ⋅32429.

It is not a de Polignac number, because 541261 - 2⁷ = 541133 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 (541267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38655 + ... + 38668.

It is an arithmetic number, because the mean of its divisors is an integer number (154648).

2⁵⁴¹²⁶¹ is an apocalyptic number.

It is an amenable number.

541261 is a deficient number, since it is larger than the sum of its proper divisors (77331).

541261 is an equidigital number, since it uses as much as digits as its factorization.

541261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77330.

The product of its digits is 240, while the sum is 19.

The square root of 541261 is about 735.7044243445. The cubic root of 541261 is about 81.4958658999.

The spelling of 541261 in words is "five hundred forty-one thousand, two hundred sixty-one".