541505687 has 2 divisors, whose sum is σ = 541505688. Its totient is φ = 541505686.

The previous prime is 541505669. The next prime is 541505689. The reversal of 541505687 is 786505145.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-541505687 is a prime.

Together with 541505689, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (541505689) 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, 270752843 + 270752844.

It is an arithmetic number, because the mean of its divisors is an integer number (270752844).

Almost surely, 2^541505687 is an apocalyptic number.

541505687 is a deficient number, since it is larger than the sum of its proper divisors (1).

541505687 is an equidigital number, since it uses as much as digits as its factorization.

541505687 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 168000, while the sum is 41.

The square root of 541505687 is about 23270.2747512787. The cubic root of 541505687 is about 815.0814461870.

The spelling of 541505687 in words is "five hundred forty-one million, five hundred five thousand, six hundred eighty-seven".