541320661 has 8 divisors (see below), whose sum is σ = 618848000. Its totient is φ = 463842288.

The previous prime is 541320629. The next prime is 541320673. The reversal of 541320661 is 166023145.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 541320661 - 2⁵ = 541320629 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (541320361) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15715 + ... + 36463.

It is an arithmetic number, because the mean of its divisors is an integer number (77356000).

Almost surely, 2^541320661 is an apocalyptic number.

It is an amenable number.

541320661 is a deficient number, since it is larger than the sum of its proper divisors (77527339).

541320661 is a wasteful number, since it uses less digits than its factorization.

541320661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24483.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 541320661 is about 23266.2988246949. The cubic root of 541320661 is about 814.9886010927.

The spelling of 541320661 in words is "five hundred forty-one million, three hundred twenty thousand, six hundred sixty-one".