245153565 has 12 divisors (see below), whose sum is σ = 424932924. Its totient is φ = 130748544.

The previous prime is 245153543. The next prime is 245153581. The reversal of 245153565 is 565351542.

245153565 is a `hidden beast` number, since 2 + 45 + 1 + 53 + 565 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 147914244 + 97239321 = 12162^2 + 9861^2 .

It is not a de Polignac number, because 245153565 - 2²² = 240959261 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2723884 + ... + 2723973.

It is an arithmetic number, because the mean of its divisors is an integer number (35411077).

Almost surely, 2^245153565 is an apocalyptic number.

It is an amenable number.

245153565 is a deficient number, since it is larger than the sum of its proper divisors (179779359).

245153565 is a wasteful number, since it uses less digits than its factorization.

245153565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5447868 (or 5447865 counting only the distinct ones).

The product of its digits is 90000, while the sum is 36.

The square root of 245153565 is about 15657.3805280449. The cubic root of 245153565 is about 625.8631827826.

The spelling of 245153565 in words is "two hundred forty-five million, one hundred fifty-three thousand, five hundred sixty-five".