541527721 has 16 divisors (see below), whose sum is σ = 660648960. Its totient is φ = 433535760.

The previous prime is 541527691. The next prime is 541527733. The reversal of 541527721 is 127725145.

It is not a de Polignac number, because 541527721 - 2⁵ = 541527689 is a prime.

It is a super-2 number, since 2×541527721² = 586504545222907682, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (541527781) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19231 + ... + 38116.

It is an arithmetic number, because the mean of its divisors is an integer number (41290560).

Almost surely, 2^541527721 is an apocalyptic number.

It is an amenable number.

541527721 is a deficient number, since it is larger than the sum of its proper divisors (119121239).

541527721 is a wasteful number, since it uses less digits than its factorization.

541527721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57444.

The product of its digits is 19600, while the sum is 34.

The square root of 541527721 is about 23270.7481830731. The cubic root of 541527721 is about 815.0925013254.

The spelling of 541527721 in words is "five hundred forty-one million, five hundred twenty-seven thousand, seven hundred twenty-one".