245145 has 16 divisors (see below), whose sum is σ = 400320. Its totient is φ = 128064.
The previous prime is 245131. The next prime is 245149. The reversal of 245145 is 541542.
It is not a de Polignac number, because 245145 - 24 = 245129 is a prime.
245145 is a lucky 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 polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 747 + ... + 1023.
It is an arithmetic number, because the mean of its divisors is an integer number (25020).
2245145 is an apocalyptic number.
It is an amenable number.
245145 is a deficient number, since it is larger than the sum of its proper divisors (155175).
245145 is a wasteful number, since it uses less digits than its factorization.
245145 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 344.
The product of its digits is 800, while the sum is 21.
The square root of 245145 is about 495.1211972841. The cubic root of 245145 is about 62.5855894044.
Adding to 245145 its reverse (541542), we get a palindrome (786687).
The spelling of 245145 in words is "two hundred forty-five thousand, one hundred forty-five".
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