305497 has 2 divisors, whose sum is σ = 305498. Its totient is φ = 305496.

The previous prime is 305489. The next prime is 305521. The reversal of 305497 is 794503.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 301401 + 4096 = 549^2 + 64^2 .

It is a cyclic number.

It is not a de Polignac number, because 305497 - 2³ = 305489 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (305407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 152748 + 152749.

It is an arithmetic number, because the mean of its divisors is an integer number (152749).

2³⁰⁵⁴⁹⁷ is an apocalyptic number.

It is an amenable number.

305497 is a deficient number, since it is larger than the sum of its proper divisors (1).

305497 is an equidigital number, since it uses as much as digits as its factorization.

305497 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3780, while the sum is 28.

The square root of 305497 is about 552.7178303619. The cubic root of 305497 is about 67.3496975769.

The spelling of 305497 in words is "three hundred five thousand, four hundred ninety-seven".