245564505 has 48 divisors (see below), whose sum is σ = 435352320. Its totient is φ = 128016000.

The previous prime is 245564503. The next prime is 245564563. The reversal of 245564505 is 505465542.

245564505 is a `hidden beast` number, since 2 + 4 + 5 + 5 + 645 + 0 + 5 = 666.

It is not a de Polignac number, because 245564505 - 2¹ = 245564503 is a prime.

It is a super-3 number, since 3×245564505³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 245564505.

It is not an unprimeable number, because it can be changed into a prime (245564503) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 482191 + ... + 482699.

It is an arithmetic number, because the mean of its divisors is an integer number (9069840).

Almost surely, 2^245564505 is an apocalyptic number.

It is an amenable number.

245564505 is a deficient number, since it is larger than the sum of its proper divisors (189787815).

245564505 is a wasteful number, since it uses less digits than its factorization.

245564505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 742 (or 739 counting only the distinct ones).

The product of its (nonzero) digits is 120000, while the sum is 36.

The square root of 245564505 is about 15670.4979180625. The cubic root of 245564505 is about 626.2126897585.

The spelling of 245564505 in words is "two hundred forty-five million, five hundred sixty-four thousand, five hundred five".