245500 has 24 divisors (see below), whose sum is σ = 537264. Its totient is φ = 98000.

The previous prime is 245477. The next prime is 245501. The reversal of 245500 is 5542.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245501) by changing a digit.

245500 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 255 + ... + 745.

It is an arithmetic number, because the mean of its divisors is an integer number (22386).

2²⁴⁵⁵⁰⁰ is an apocalyptic number.

245500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 245500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (268632).

245500 is an abundant number, since it is smaller than the sum of its proper divisors (291764).

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

245500 is a wasteful number, since it uses less digits than its factorization.

245500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 510 (or 498 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 16.

The square root of 245500 is about 495.4795656735. The cubic root of 245500 is about 62.6157853675.

It can be divided in two parts, 245 and 500, that multiplied together give a square (122500 = 350²).

The spelling of 245500 in words is "two hundred forty-five thousand, five hundred".