541353922561 has 4 divisors (see below), whose sum is σ = 541988570452. Its totient is φ = 540719274672.

The previous prime is 541353922553. The next prime is 541353922573. The reversal of 541353922561 is 165229353145.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 154650281536 + 386703641025 = 393256^2 + 621855^2 .

It is a cyclic number.

It is not a de Polignac number, because 541353922561 - 2³ = 541353922553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (541353925561) 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, 317322666 + ... + 317324371.

It is an arithmetic number, because the mean of its divisors is an integer number (135497142613).

Almost surely, 2^541353922561 is an apocalyptic number.

It is an amenable number.

541353922561 is a deficient number, since it is larger than the sum of its proper divisors (634647891).

541353922561 is an equidigital number, since it uses as much as digits as its factorization.

541353922561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 634647890.

The product of its digits is 972000, while the sum is 46.

The spelling of 541353922561 in words is "five hundred forty-one billion, three hundred fifty-three million, nine hundred twenty-two thousand, five hundred sixty-one".