505107901 has 2 divisors, whose sum is σ = 505107902. Its totient is φ = 505107900.

The previous prime is 505107847. The next prime is 505107929. The reversal of 505107901 is 109701505.

It is an a-pointer prime, because the next prime (505107929) can be obtained adding 505107901 to its sum of digits (28).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 505080676 + 27225 = 22474^2 + 165^2 .

It is a cyclic number.

It is not a de Polignac number, because 505107901 - 2⁷ = 505107773 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 505107901.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (505107601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252553950 + 252553951.

It is an arithmetic number, because the mean of its divisors is an integer number (252553951).

Almost surely, 2^505107901 is an apocalyptic number.

It is an amenable number.

505107901 is a deficient number, since it is larger than the sum of its proper divisors (1).

505107901 is an equidigital number, since it uses as much as digits as its factorization.

505107901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1575, while the sum is 28.

The square root of 505107901 is about 22474.6056917580. The cubic root of 505107901 is about 796.3941367105.

The spelling of 505107901 in words is "five hundred five million, one hundred seven thousand, nine hundred one".