505662541 has 2 divisors, whose sum is σ = 505662542. Its totient is φ = 505662540.

The previous prime is 505662539. The next prime is 505662551. The reversal of 505662541 is 145266505.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 302029641 + 203632900 = 17379^2 + 14270^2 .

It is a cyclic number.

It is not a de Polignac number, because 505662541 - 2¹ = 505662539 is a prime.

Together with 505662539, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 505662497 and 505662506.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (505662511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252831270 + 252831271.

It is an arithmetic number, because the mean of its divisors is an integer number (252831271).

Almost surely, 2^505662541 is an apocalyptic number.

It is an amenable number.

505662541 is a deficient number, since it is larger than the sum of its proper divisors (1).

505662541 is an equidigital number, since it uses as much as digits as its factorization.

505662541 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36000, while the sum is 34.

The square root of 505662541 is about 22486.9415661623. The cubic root of 505662541 is about 796.6855269038.

The spelling of 505662541 in words is "five hundred five million, six hundred sixty-two thousand, five hundred forty-one".