245533865 has 16 divisors (see below), whose sum is σ = 320846400. Its totient is φ = 179669952.

The previous prime is 245533861. The next prime is 245533889. The reversal of 245533865 is 568335542.

It is a cyclic number.

It is not a de Polignac number, because 245533865 - 2² = 245533861 is a prime.

It is not an unprimeable number, because it can be changed into a prime (245533861) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 41807 + ... + 47316.

It is an arithmetic number, because the mean of its divisors is an integer number (20052900).

Almost surely, 2^245533865 is an apocalyptic number.

It is an amenable number.

245533865 is a deficient number, since it is larger than the sum of its proper divisors (75312535).

245533865 is a wasteful number, since it uses less digits than its factorization.

245533865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89176.

The product of its digits is 432000, while the sum is 41.

The square root of 245533865 is about 15669.5202543026. The cubic root of 245533865 is about 626.1866437102.

The spelling of 245533865 in words is "two hundred forty-five million, five hundred thirty-three thousand, eight hundred sixty-five".