248861 has 2 divisors, whose sum is σ = 248862. Its totient is φ = 248860.

The previous prime is 248851. The next prime is 248867. The reversal of 248861 is 168842.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 219961 + 28900 = 469^2 + 170^2 .

It is a cyclic number.

It is not a de Polignac number, because 248861 - 2⁶ = 248797 is a prime.

It is a Chen prime.

It is a plaindrome in base 14.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 248861.

It is not a weakly prime, because it can be changed into another prime (248867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124430 + 124431.

It is an arithmetic number, because the mean of its divisors is an integer number (124431).

2²⁴⁸⁸⁶¹ is an apocalyptic number.

It is an amenable number.

248861 is a deficient number, since it is larger than the sum of its proper divisors (1).

248861 is an equidigital number, since it uses as much as digits as its factorization.

248861 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3072, while the sum is 29.

The square root of 248861 is about 498.8596997153. The cubic root of 248861 is about 62.9002368300.

Subtracting from 248861 its sum of digits (29), we obtain a 5-th power (248832 = 12⁵).

The spelling of 248861 in words is "two hundred forty-eight thousand, eight hundred sixty-one".