541621831 has 2 divisors, whose sum is σ = 541621832. Its totient is φ = 541621830.

The previous prime is 541621823. The next prime is 541621837. The reversal of 541621831 is 138126145.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 541621831 - 2³ = 541621823 is a prime.

It is a super-2 number, since 2×541621831² = 586708415631585122, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 541621793 and 541621802.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (541621837) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 270810915 + 270810916.

It is an arithmetic number, because the mean of its divisors is an integer number (270810916).

Almost surely, 2^541621831 is an apocalyptic number.

541621831 is a deficient number, since it is larger than the sum of its proper divisors (1).

541621831 is an equidigital number, since it uses as much as digits as its factorization.

541621831 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5760, while the sum is 31.

The square root of 541621831 is about 23272.7701617147. The cubic root of 541621831 is about 815.1397158441.

Adding to 541621831 its reverse (138126145), we get a palindrome (679747976).

The spelling of 541621831 in words is "five hundred forty-one million, six hundred twenty-one thousand, eight hundred thirty-one".