541801391 has 2 divisors, whose sum is σ = 541801392. Its totient is φ = 541801390.

The previous prime is 541801387. The next prime is 541801411. The reversal of 541801391 is 193108145.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 541801391 - 2² = 541801387 is a prime.

It is a super-3 number, since 3×541801391³ (a number of 27 digits) contains 333 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (541801691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 270900695 + 270900696.

It is an arithmetic number, because the mean of its divisors is an integer number (270900696).

Almost surely, 2^541801391 is an apocalyptic number.

541801391 is a deficient number, since it is larger than the sum of its proper divisors (1).

541801391 is an equidigital number, since it uses as much as digits as its factorization.

541801391 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4320, while the sum is 32.

The square root of 541801391 is about 23276.6275693022. The cubic root of 541801391 is about 815.2297850322.

The spelling of 541801391 in words is "five hundred forty-one million, eight hundred one thousand, three hundred ninety-one".