541491081 has 4 divisors (see below), whose sum is σ = 721988112. Its totient is φ = 360994052.

The previous prime is 541491077. The next prime is 541491101. The reversal of 541491081 is 180194145.

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 541491081 - 2² = 541491077 is a prime.

It is a super-2 number, since 2×541491081² = 586425181605097122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (541491011) 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, 90248511 + ... + 90248516.

It is an arithmetic number, because the mean of its divisors is an integer number (180497028).

Almost surely, 2^541491081 is an apocalyptic number.

It is an amenable number.

541491081 is a deficient number, since it is larger than the sum of its proper divisors (180497031).

541491081 is a wasteful number, since it uses less digits than its factorization.

541491081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180497030.

The product of its (nonzero) digits is 5760, while the sum is 33.

The square root of 541491081 is about 23269.9609153088. The cubic root of 541491081 is about 815.0741177403.

The spelling of 541491081 in words is "five hundred forty-one million, four hundred ninety-one thousand, eighty-one".