495509501 has 2 divisors, whose sum is σ = 495509502. Its totient is φ = 495509500.

The previous prime is 495509471. The next prime is 495509507. The reversal of 495509501 is 105905594.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 467683876 + 27825625 = 21626^2 + 5275^2 .

It is a cyclic number.

It is not a de Polignac number, because 495509501 - 2⁶ = 495509437 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (495509507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 247754750 + 247754751.

It is an arithmetic number, because the mean of its divisors is an integer number (247754751).

Almost surely, 2^495509501 is an apocalyptic number.

It is an amenable number.

495509501 is a deficient number, since it is larger than the sum of its proper divisors (1).

495509501 is an equidigital number, since it uses as much as digits as its factorization.

495509501 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40500, while the sum is 38.

The square root of 495509501 is about 22260.0426998692. The cubic root of 495509501 is about 791.3173028278.

The spelling of 495509501 in words is "four hundred ninety-five million, five hundred nine thousand, five hundred one".