245371117 has 8 divisors (see below), whose sum is σ = 256348440. Its totient is φ = 234561600.

The previous prime is 245371109. The next prime is 245371121. The reversal of 245371117 is 711173542.

It can be written as a sum of positive squares in 4 ways, for example, as 90269001 + 155102116 = 9501^2 + 12454^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 245371117 - 2³ = 245371109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245371127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38958 + ... + 44815.

It is an arithmetic number, because the mean of its divisors is an integer number (32043555).

Almost surely, 2^245371117 is an apocalyptic number.

It is an amenable number.

245371117 is a deficient number, since it is larger than the sum of its proper divisors (10977323).

245371117 is a wasteful number, since it uses less digits than its factorization.

245371117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83903.

The product of its digits is 5880, while the sum is 31.

The square root of 245371117 is about 15664.3262542632. The cubic root of 245371117 is about 626.0482606963.

The spelling of 245371117 in words is "two hundred forty-five million, three hundred seventy-one thousand, one hundred seventeen".