273720497 has 2 divisors, whose sum is σ = 273720498. Its totient is φ = 273720496.

The previous prime is 273720463. The next prime is 273720523. The reversal of 273720497 is 794027372.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 273207841 + 512656 = 16529^2 + 716^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-273720497 is a prime.

It is not a weakly prime, because it can be changed into another prime (273720437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 136860248 + 136860249.

It is an arithmetic number, because the mean of its divisors is an integer number (136860249).

Almost surely, 2^273720497 is an apocalyptic number.

It is an amenable number.

273720497 is a deficient number, since it is larger than the sum of its proper divisors (1).

273720497 is an equidigital number, since it uses as much as digits as its factorization.

273720497 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 148176, while the sum is 41.

The square root of 273720497 is about 16544.5005062105. The cubic root of 273720497 is about 649.2856032800.

The spelling of 273720497 in words is "two hundred seventy-three million, seven hundred twenty thousand, four hundred ninety-seven".