541613521 has 4 divisors (see below), whose sum is σ = 543673152. Its totient is φ = 539553892.

The previous prime is 541613507. The next prime is 541613533. The reversal of 541613521 is 125316145.

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 541613521 - 2¹⁹ = 541089233 is a prime.

It is a super-2 number, since 2×541613521² = 586690412260034882, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 541613521.

It is not an unprimeable number, because it can be changed into a prime (541613551) 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, 1029421 + ... + 1029946.

It is an arithmetic number, because the mean of its divisors is an integer number (135918288).

Almost surely, 2^541613521 is an apocalyptic number.

It is an amenable number.

541613521 is a deficient number, since it is larger than the sum of its proper divisors (2059631).

541613521 is a wasteful number, since it uses less digits than its factorization.

541613521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2059630.

The product of its digits is 3600, while the sum is 28.

The square root of 541613521 is about 23272.5916262027. The cubic root of 541613521 is about 815.1355469786.

Adding to 541613521 its reverse (125316145), we get a palindrome (666929666).

The spelling of 541613521 in words is "five hundred forty-one million, six hundred thirteen thousand, five hundred twenty-one".