245090 has 8 divisors (see below), whose sum is σ = 441180. Its totient is φ = 98032.

The previous prime is 245087. The next prime is 245107. The reversal of 245090 is 90542.

It can be written as a sum of positive squares in 2 ways, for example, as 237169 + 7921 = 487^2 + 89^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a nialpdrome in base 13.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 12245 + ... + 12264.

2²⁴⁵⁰⁹⁰ is an apocalyptic number.

245090 is a deficient number, since it is larger than the sum of its proper divisors (196090).

245090 is a wasteful number, since it uses less digits than its factorization.

245090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24516.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 245090 is about 495.0656522119. The cubic root of 245090 is about 62.5809085490.

The spelling of 245090 in words is "two hundred forty-five thousand, ninety".