245203117 has 2 divisors, whose sum is σ = 245203118. Its totient is φ = 245203116.

The previous prime is 245203109. The next prime is 245203141. The reversal of 245203117 is 711302542.

It is a happy number.

245203117 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 242549476 + 2653641 = 15574^2 + 1629^2 .

It is a cyclic number.

It is not a de Polignac number, because 245203117 - 2³ = 245203109 is a prime.

It is a super-3 number, since 3×245203117³ (a number of 26 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 245203091 and 245203100.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (245203187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122601558 + 122601559.

It is an arithmetic number, because the mean of its divisors is an integer number (122601559).

Almost surely, 2^245203117 is an apocalyptic number.

It is an amenable number.

245203117 is a deficient number, since it is larger than the sum of its proper divisors (1).

245203117 is an equidigital number, since it uses as much as digits as its factorization.

245203117 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 245203117 is about 15658.9628328316. The cubic root of 245203117 is about 625.9053477595.

Adding to 245203117 its reverse (711302542), we get a palindrome (956505659).

The spelling of 245203117 in words is "two hundred forty-five million, two hundred three thousand, one hundred seventeen".