495974621 has 2 divisors, whose sum is σ = 495974622. Its totient is φ = 495974620.

The previous prime is 495974587. The next prime is 495974641. The reversal of 495974621 is 126479594.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 495552121 + 422500 = 22261^2 + 650^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-495974621 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 (495974641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 247987310 + 247987311.

It is an arithmetic number, because the mean of its divisors is an integer number (247987311).

Almost surely, 2^495974621 is an apocalyptic number.

It is an amenable number.

495974621 is a deficient number, since it is larger than the sum of its proper divisors (1).

495974621 is an equidigital number, since it uses as much as digits as its factorization.

495974621 is an evil number, because the sum of its binary digits is even.

The product of its digits is 544320, while the sum is 47.

The square root of 495974621 is about 22270.4876686614. The cubic root of 495974621 is about 791.5648207204.

The spelling of 495974621 in words is "four hundred ninety-five million, nine hundred seventy-four thousand, six hundred twenty-one".