245644520 has 48 divisors (see below), whose sum is σ = 607525380. Its totient is φ = 89323520.

The previous prime is 245644507. The next prime is 245644523. The reversal of 245644520 is 25446542.

245644520 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 237838084 + 7806436 = 15422^2 + 2794^2 .

It is not an unprimeable number, because it can be changed into a prime (245644523) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20537 + ... + 30216.

Almost surely, 2^245644520 is an apocalyptic number.

245644520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

245644520 is an abundant number, since it is smaller than the sum of its proper divisors (361880860).

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

245644520 is a wasteful number, since it uses less digits than its factorization.

245644520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50786 (or 50771 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 32.

The square root of 245644520 is about 15673.0507559951. The cubic root of 245644520 is about 626.2806976425.

The spelling of 245644520 in words is "two hundred forty-five million, six hundred forty-four thousand, five hundred twenty".