541555639 has 2 divisors, whose sum is σ = 541555640. Its totient is φ = 541555638.

The previous prime is 541555627. The next prime is 541555649. The reversal of 541555639 is 936555145.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 541555639 - 2¹⁵ = 541522871 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 541555595 and 541555604.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (541555649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 270777819 + 270777820.

It is an arithmetic number, because the mean of its divisors is an integer number (270777820).

Almost surely, 2^541555639 is an apocalyptic number.

541555639 is a deficient number, since it is larger than the sum of its proper divisors (1).

541555639 is an equidigital number, since it uses as much as digits as its factorization.

541555639 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 405000, while the sum is 43.

The square root of 541555639 is about 23271.3480271341. The cubic root of 541555639 is about 815.1065082177.

The spelling of 541555639 in words is "five hundred forty-one million, five hundred fifty-five thousand, six hundred thirty-nine".