245550 has 24 divisors (see below), whose sum is σ = 609336. Its totient is φ = 65440.

The previous prime is 245533. The next prime is 245561. The reversal of 245550 is 55542.

It is a congruent number.

It is an unprimeable number.

245550 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 669 + ... + 968.

It is an arithmetic number, because the mean of its divisors is an integer number (25389).

2²⁴⁵⁵⁵⁰ is an apocalyptic number.

245550 is an abundant number, since it is smaller than the sum of its proper divisors (363786).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

245550 is a wasteful number, since it uses less digits than its factorization.

245550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1652 (or 1647 counting only the distinct ones).

The product of its (nonzero) digits is 1000, while the sum is 21.

The square root of 245550 is about 495.5300192723. The cubic root of 245550 is about 62.6200359809.

The spelling of 245550 in words is "two hundred forty-five thousand, five hundred fifty".