245827 has 4 divisors (see below), whose sum is σ = 246960. Its totient is φ = 244696.

The previous prime is 245821. The next prime is 245849. The reversal of 245827 is 728542.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 728542 = 2 ⋅364271.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-245827 is a prime.

It is a Duffinian number.

245827 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 245795 and 245804.

It is not an unprimeable number, because it can be changed into a prime (245821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 127 + ... + 712.

It is an arithmetic number, because the mean of its divisors is an integer number (61740).

2²⁴⁵⁸²⁷ is an apocalyptic number.

245827 is a deficient number, since it is larger than the sum of its proper divisors (1133).

245827 is an equidigital number, since it uses as much as digits as its factorization.

245827 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1132.

The product of its digits is 4480, while the sum is 28.

The square root of 245827 is about 495.8094392002. The cubic root of 245827 is about 62.6435739319.

It can be divided in two parts, 2458 and 27, that multiplied together give a palindrome (66366).

The spelling of 245827 in words is "two hundred forty-five thousand, eight hundred twenty-seven".