495113921 has 2 divisors, whose sum is σ = 495113922. Its totient is φ = 495113920.

The previous prime is 495113887. The next prime is 495113929. The reversal of 495113921 is 129311594.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 357966400 + 137147521 = 18920^2 + 11711^2 .

It is a cyclic number.

It is not a de Polignac number, because 495113921 - 2²² = 490919617 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (495113929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 247556960 + 247556961.

It is an arithmetic number, because the mean of its divisors is an integer number (247556961).

Almost surely, 2^495113921 is an apocalyptic number.

It is an amenable number.

495113921 is a deficient number, since it is larger than the sum of its proper divisors (1).

495113921 is an equidigital number, since it uses as much as digits as its factorization.

495113921 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9720, while the sum is 35.

The square root of 495113921 is about 22251.1554980859. The cubic root of 495113921 is about 791.1066693720.

The spelling of 495113921 in words is "four hundred ninety-five million, one hundred thirteen thousand, nine hundred twenty-one".