541055415521 has 4 divisors (see below), whose sum is σ = 549130869552. Its totient is φ = 532979961492.

The previous prime is 541055415473. The next prime is 541055415529. The reversal of 541055415521 is 125514550145.

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 541055415521 - 2¹⁸ = 541055153377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (541055415529) 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, 4037726915 + ... + 4037727048.

It is an arithmetic number, because the mean of its divisors is an integer number (137282717388).

Almost surely, 2^541055415521 is an apocalyptic number.

It is an amenable number.

541055415521 is a deficient number, since it is larger than the sum of its proper divisors (8075454031).

541055415521 is an equidigital number, since it uses as much as digits as its factorization.

541055415521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8075454030.

The product of its (nonzero) digits is 100000, while the sum is 38.

Adding to 541055415521 its reverse (125514550145), we get a palindrome (666569965666).

The spelling of 541055415521 in words is "five hundred forty-one billion, fifty-five million, four hundred fifteen thousand, five hundred twenty-one".