290245 has 4 divisors (see below), whose sum is σ = 348300. Its totient is φ = 232192.

The previous prime is 290243. The next prime is 290249. The reversal of 290245 is 542092.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 159201 + 131044 = 399^2 + 362^2 .

It is a cyclic number.

It is not a de Polignac number, because 290245 - 2¹ = 290243 is a prime.

It is a plaindrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (290243) 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, 29020 + ... + 29029.

It is an arithmetic number, because the mean of its divisors is an integer number (87075).

2²⁹⁰²⁴⁵ is an apocalyptic number.

It is an amenable number.

290245 is a deficient number, since it is larger than the sum of its proper divisors (58055).

290245 is an equidigital number, since it uses as much as digits as its factorization.

290245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58054.

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

The square root of 290245 is about 538.7439094783. The cubic root of 290245 is about 66.2096942445.

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

The spelling of 290245 in words is "two hundred ninety thousand, two hundred forty-five".