245290 has 16 divisors (see below), whose sum is σ = 465120. Its totient is φ = 92880.

The previous prime is 245279. The next prime is 245291. The reversal of 245290 is 92542.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (245291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 456 + ... + 835.

It is an arithmetic number, because the mean of its divisors is an integer number (29070).

2²⁴⁵²⁹⁰ is an apocalyptic number.

245290 is a deficient number, since it is larger than the sum of its proper divisors (219830).

245290 is a wasteful number, since it uses less digits than its factorization.

245290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1317.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 245290 is about 495.2676044322. The cubic root of 245290 is about 62.5979264863.

It can be divided in two parts, 245 and 290, that added together give a palindrome (535).

The spelling of 245290 in words is "two hundred forty-five thousand, two hundred ninety".