248569 has 2 divisors, whose sum is σ = 248570. Its totient is φ = 248568.

The previous prime is 248543. The next prime is 248579. The reversal of 248569 is 965842.

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., 190969 + 57600 = 437^2 + 240^2 .

It is a cyclic number.

It is not a de Polignac number, because 248569 - 2⁵ = 248537 is a prime.

It is a super-2 number, since 2×248569² = 123573095522, which contains 22 as substring.

It is a nialpdrome in base 12.

It is not a weakly prime, because it can be changed into another prime (248509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124284 + 124285.

It is an arithmetic number, because the mean of its divisors is an integer number (124285).

2²⁴⁸⁵⁶⁹ is an apocalyptic number.

It is an amenable number.

248569 is a deficient number, since it is larger than the sum of its proper divisors (1).

248569 is an equidigital number, since it uses as much as digits as its factorization.

248569 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17280, while the sum is 34.

The square root of 248569 is about 498.5669463573. The cubic root of 248569 is about 62.8756259596.

The spelling of 248569 in words is "two hundred forty-eight thousand, five hundred sixty-nine".