296561 has 2 divisors, whose sum is σ = 296562. Its totient is φ = 296560.

The previous prime is 296557. The next prime is 296563. The reversal of 296561 is 165692.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 295936 + 625 = 544^2 + 25^2 .

It is a cyclic number.

It is not a de Polignac number, because 296561 - 2² = 296557 is a prime.

Together with 296563, it forms a pair of twin primes.

It is a Chen prime.

It is an alternating number because its digits alternate between even and odd.

It is not a weakly prime, because it can be changed into another prime (296563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 148280 + 148281.

It is an arithmetic number, because the mean of its divisors is an integer number (148281).

2²⁹⁶⁵⁶¹ is an apocalyptic number.

It is an amenable number.

296561 is a deficient number, since it is larger than the sum of its proper divisors (1).

296561 is an equidigital number, since it uses as much as digits as its factorization.

296561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3240, while the sum is 29.

The square root of 296561 is about 544.5741455486. The cubic root of 296561 is about 66.6865135354.

The spelling of 296561 in words is "two hundred ninety-six thousand, five hundred sixty-one".