505011953 has 2 divisors, whose sum is σ = 505011954. Its totient is φ = 505011952.

The previous prime is 505011937. The next prime is 505012021. The reversal of 505011953 is 359110505.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 438148624 + 66863329 = 20932^2 + 8177^2 .

It is a cyclic number.

It is not a de Polignac number, because 505011953 - 2⁴ = 505011937 is a prime.

It is not a weakly prime, because it can be changed into another prime (505011553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252505976 + 252505977.

It is an arithmetic number, because the mean of its divisors is an integer number (252505977).

Almost surely, 2^505011953 is an apocalyptic number.

It is an amenable number.

505011953 is a deficient number, since it is larger than the sum of its proper divisors (1).

505011953 is an equidigital number, since it uses as much as digits as its factorization.

505011953 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3375, while the sum is 29.

The square root of 505011953 is about 22472.4710034300. The cubic root of 505011953 is about 796.3437070477.

The spelling of 505011953 in words is "five hundred five million, eleven thousand, nine hundred fifty-three".