245147 has 6 divisors (see below), whose sum is σ = 285228. Its totient is φ = 210084.

The previous prime is 245131. The next prime is 245149. The reversal of 245147 is 741542.

It is not a de Polignac number, because 245147 - 2⁴ = 245131 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (245149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2453 + ... + 2550.

It is an arithmetic number, because the mean of its divisors is an integer number (47538).

2²⁴⁵¹⁴⁷ is an apocalyptic number.

245147 is a deficient number, since it is larger than the sum of its proper divisors (40081).

245147 is an equidigital number, since it uses as much as digits as its factorization.

245147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5017 (or 5010 counting only the distinct ones).

The product of its digits is 1120, while the sum is 23.

The square root of 245147 is about 495.1232169874. The cubic root of 245147 is about 62.5857596042.

Adding to 245147 its reverse (741542), we get a palindrome (986689).

The spelling of 245147 in words is "two hundred forty-five thousand, one hundred forty-seven".