245145211 has 4 divisors (see below), whose sum is σ = 245275272. Its totient is φ = 245015152.

The previous prime is 245145209. The next prime is 245145217. The reversal of 245145211 is 112541542.

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 245145211 - 2¹ = 245145209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (245145217) 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, 62161 + ... + 65986.

It is an arithmetic number, because the mean of its divisors is an integer number (61318818).

Almost surely, 2^245145211 is an apocalyptic number.

245145211 is a deficient number, since it is larger than the sum of its proper divisors (130061).

245145211 is a wasteful number, since it uses less digits than its factorization.

245145211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130060.

The product of its digits is 1600, while the sum is 25.

The square root of 245145211 is about 15657.1137506247. The cubic root of 245145211 is about 625.8560736054.

Adding to 245145211 its reverse (112541542), we get a palindrome (357686753).

The spelling of 245145211 in words is "two hundred forty-five million, one hundred forty-five thousand, two hundred eleven".