245650117 has 4 divisors (see below), whose sum is σ = 245682316. Its totient is φ = 245617920.

The previous prime is 245650091. The next prime is 245650133. The reversal of 245650117 is 711056542.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 189310081 + 56340036 = 13759^2 + 7506^2 .

It is a cyclic number.

It is not a de Polignac number, because 245650117 - 2²⁷ = 111432389 is a prime.

It is a super-2 number, since 2×245650117² = 120687959964227378, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245650157) 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 3 ways as a sum of consecutive naturals, for example, 2533 + ... + 22309.

It is an arithmetic number, because the mean of its divisors is an integer number (61420579).

Almost surely, 2^245650117 is an apocalyptic number.

It is an amenable number.

245650117 is a deficient number, since it is larger than the sum of its proper divisors (32199).

245650117 is a wasteful number, since it uses less digits than its factorization.

245650117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32198.

The product of its (nonzero) digits is 8400, while the sum is 31.

The square root of 245650117 is about 15673.2293098774. The cubic root of 245650117 is about 626.2854541995.

The spelling of 245650117 in words is "two hundred forty-five million, six hundred fifty thousand, one hundred seventeen".