245523564 has 144 divisors (see below), whose sum is σ = 749417760. Its totient is φ = 66769920.

The previous prime is 245523521. The next prime is 245523589. The reversal of 245523564 is 465325542.

245523564 is a `hidden beast` number, since 2 + 45 + 52 + 3 + 564 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

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 47 ways as a sum of consecutive naturals, for example, 189832 + ... + 191120.

It is an arithmetic number, because the mean of its divisors is an integer number (5204290).

Almost surely, 2^245523564 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 245523564, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (374708880).

245523564 is an abundant number, since it is smaller than the sum of its proper divisors (503894196).

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

245523564 is a wasteful number, since it uses less digits than its factorization.

245523564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1360 (or 1355 counting only the distinct ones).

The product of its digits is 144000, while the sum is 36.

The square root of 245523564 is about 15669.1915554058. The cubic root of 245523564 is about 626.1778866849.

The spelling of 245523564 in words is "two hundred forty-five million, five hundred twenty-three thousand, five hundred sixty-four".