541540521 has 12 divisors (see below), whose sum is σ = 782541760. Its totient is φ = 360880920.

The previous prime is 541540471. The next prime is 541540523. The reversal of 541540521 is 125045145.

It is not a de Polignac number, because 541540521 - 2⁹ = 541540009 is a prime.

It is a super-2 number, since 2×541540521² = 586532271769902882, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (541540523) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14340 + ... + 35898.

Almost surely, 2^541540521 is an apocalyptic number.

It is an amenable number.

541540521 is a deficient number, since it is larger than the sum of its proper divisors (241001239).

541540521 is a wasteful number, since it uses less digits than its factorization.

541540521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24356 (or 24353 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 27.

The square root of 541540521 is about 23271.0232048357. The cubic root of 541540521 is about 815.0989233431.

Adding to 541540521 its reverse (125045145), we get a palindrome (666585666).

The spelling of 541540521 in words is "five hundred forty-one million, five hundred forty thousand, five hundred twenty-one".