245247 has 4 divisors (see below), whose sum is σ = 327000. Its totient is φ = 163496.

The previous prime is 245209. The next prime is 245251. The reversal of 245247 is 742542.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 245247 - 2⁶ = 245183 is a prime.

It is an Ulam number.

It is a D-number.

245247 is a lucky number.

It is a plaindrome in base 16.

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 245247.

It is not an unprimeable number, because it can be changed into a prime (245257) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40872 + ... + 40877.

It is an arithmetic number, because the mean of its divisors is an integer number (81750).

2²⁴⁵²⁴⁷ is an apocalyptic number.

245247 is a deficient number, since it is larger than the sum of its proper divisors (81753).

245247 is an equidigital number, since it uses as much as digits as its factorization.

245247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81752.

The product of its digits is 2240, while the sum is 24.

The square root of 245247 is about 495.2241916546. The cubic root of 245247 is about 62.5942684106.

Adding to 245247 its reverse (742542), we get a palindrome (987789).

It can be divided in two parts, 24524 and 7, that added together give a triangular number (24531 = T₂₂₁).

The spelling of 245247 in words is "two hundred forty-five thousand, two hundred forty-seven".