245520500 has 24 divisors (see below), whose sum is σ = 536217864. Its totient is φ = 98208000.

The previous prime is 245520491. The next prime is 245520521. The reversal of 245520500 is 5025542.

It can be written as a sum of positive squares in 4 ways, for example, as 79316836 + 166203664 = 8906^2 + 12892^2 .

It is a congruent number.

It is an unprimeable 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 7 ways as a sum of consecutive naturals, for example, 245021 + ... + 246020.

It is an arithmetic number, because the mean of its divisors is an integer number (22342411).

Almost surely, 2^245520500 is an apocalyptic number.

245520500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

245520500 is an abundant number, since it is smaller than the sum of its proper divisors (290697364).

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

245520500 is a wasteful number, since it uses less digits than its factorization.

245520500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 491060 (or 491048 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 23.

The square root of 245520500 is about 15669.0937836239. The cubic root of 245520500 is about 626.1752818880.

The spelling of 245520500 in words is "two hundred forty-five million, five hundred twenty thousand, five hundred".