245800 has 24 divisors (see below), whose sum is σ = 571950. Its totient is φ = 98240.

The previous prime is 245789. The next prime is 245821. The reversal of 245800 is 8542.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 236196 + 9604 = 486^2 + 98^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 415 + ... + 814.

2²⁴⁵⁸⁰⁰ is an apocalyptic number.

245800 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

245800 is an abundant number, since it is smaller than the sum of its proper divisors (326150).

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

245800 is a wasteful number, since it uses less digits than its factorization.

245800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1245 (or 1236 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 245800 is about 495.7822102496. The cubic root of 245800 is about 62.6412803970.

The spelling of 245800 in words is "two hundred forty-five thousand, eight hundred".