245145000 has 160 divisors (see below), whose sum is σ = 781624800. Its totient is φ = 64032000.

The previous prime is 245144989. The next prime is 245145001. The reversal of 245145000 is 541542.

It is not an unprimeable number, because it can be changed into a prime (245145001) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 884862 + ... + 885138.

It is an arithmetic number, because the mean of its divisors is an integer number (4885155).

Almost surely, 2^245145000 is an apocalyptic number.

245145000 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 245145000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (390812400).

245145000 is an abundant number, since it is smaller than the sum of its proper divisors (536479800).

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

245145000 is a wasteful number, since it uses less digits than its factorization.

245145000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 365 (or 346 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 245145000 is about 15657.1070124720. The cubic root of 245145000 is about 625.8558940443.

Adding to 245145000 its reverse (541542), we get a palindrome (245686542).

The spelling of 245145000 in words is "two hundred forty-five million, one hundred forty-five thousand".