245121117 has 8 divisors (see below), whose sum is σ = 328910496. Its totient is φ = 162372912.

The previous prime is 245121103. The next prime is 245121133. The reversal of 245121117 is 711121542.

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

It is not a de Polignac number, because 245121117 - 2⁴ = 245121101 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245121167) 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 7 ways as a sum of consecutive naturals, for example, 259743 + ... + 260684.

It is an arithmetic number, because the mean of its divisors is an integer number (41113812).

Almost surely, 2^245121117 is an apocalyptic number.

It is an amenable number.

245121117 is a deficient number, since it is larger than the sum of its proper divisors (83789379).

245121117 is a wasteful number, since it uses less digits than its factorization.

245121117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 520587.

The product of its digits is 560, while the sum is 24.

The square root of 245121117 is about 15656.3443051052. The cubic root of 245121117 is about 625.8355689282.

Adding to 245121117 its reverse (711121542), we get a palindrome (956242659).

The spelling of 245121117 in words is "two hundred forty-five million, one hundred twenty-one thousand, one hundred seventeen".