505162109 has 2 divisors, whose sum is σ = 505162110. Its totient is φ = 505162108.

The previous prime is 505162067. The next prime is 505162171. The reversal of 505162109 is 901261505.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 280462009 + 224700100 = 16747^2 + 14990^2 .

It is a cyclic number.

It is not a de Polignac number, because 505162109 - 2¹⁶ = 505096573 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (505161109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252581054 + 252581055.

It is an arithmetic number, because the mean of its divisors is an integer number (252581055).

Almost surely, 2^505162109 is an apocalyptic number.

It is an amenable number.

505162109 is a deficient number, since it is larger than the sum of its proper divisors (1).

505162109 is an equidigital number, since it uses as much as digits as its factorization.

505162109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2700, while the sum is 29.

The square root of 505162109 is about 22475.8116427416. The cubic root of 505162109 is about 796.4226252698.

It can be divided in two parts, 50516 and 2109, that added together give a palindrome (52625).

The spelling of 505162109 in words is "five hundred five million, one hundred sixty-two thousand, one hundred nine".