541391321 has 4 divisors (see below), whose sum is σ = 547914192. Its totient is φ = 534868452.

The previous prime is 541391311. The next prime is 541391327. The reversal of 541391321 is 123193145.

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 541391321 - 2¹⁴ = 541374937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (541391327) 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, 3261311 + ... + 3261476.

It is an arithmetic number, because the mean of its divisors is an integer number (136978548).

Almost surely, 2^541391321 is an apocalyptic number.

It is an amenable number.

541391321 is a deficient number, since it is larger than the sum of its proper divisors (6522871).

541391321 is an equidigital number, since it uses as much as digits as its factorization.

541391321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6522870.

The product of its digits is 3240, while the sum is 29.

The square root of 541391321 is about 23267.8172805272. The cubic root of 541391321 is about 815.0240604135.

The spelling of 541391321 in words is "five hundred forty-one million, three hundred ninety-one thousand, three hundred twenty-one".