541621403 has 2 divisors, whose sum is σ = 541621404. Its totient is φ = 541621402.

The previous prime is 541621387. The next prime is 541621471. The reversal of 541621403 is 304126145.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 541621403 - 2⁴ = 541621387 is a prime.

It is not a weakly prime, because it can be changed into another prime (541621303) 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, 270810701 + 270810702.

It is an arithmetic number, because the mean of its divisors is an integer number (270810702).

Almost surely, 2^541621403 is an apocalyptic number.

541621403 is a deficient number, since it is larger than the sum of its proper divisors (1).

541621403 is an equidigital number, since it uses as much as digits as its factorization.

541621403 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 541621403 is about 23272.7609664174. The cubic root of 541621403 is about 815.1395011310.

Adding to 541621403 its reverse (304126145), we get a palindrome (845747548).

The spelling of 541621403 in words is "five hundred forty-one million, six hundred twenty-one thousand, four hundred three".