245215165 has 8 divisors (see below), whose sum is σ = 316893528. Its totient is φ = 181081920.

The previous prime is 245215133. The next prime is 245215171. The reversal of 245215165 is 561512542.

It can be written as a sum of positive squares in 4 ways, for example, as 1012036 + 244203129 = 1006^2 + 15627^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 245215165 - 2⁵ = 245215133 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1886206 + ... + 1886335.

It is an arithmetic number, because the mean of its divisors is an integer number (39611691).

Almost surely, 2^245215165 is an apocalyptic number.

It is an amenable number.

245215165 is a deficient number, since it is larger than the sum of its proper divisors (71678363).

245215165 is a wasteful number, since it uses less digits than its factorization.

245215165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3772559.

The product of its digits is 12000, while the sum is 31.

The square root of 245215165 is about 15659.3475279144. The cubic root of 245215165 is about 625.9155988311.

The spelling of 245215165 in words is "two hundred forty-five million, two hundred fifteen thousand, one hundred sixty-five".