245166505 has 8 divisors (see below), whose sum is σ = 294307272. Its totient is φ = 196061568.

The previous prime is 245166451. The next prime is 245166539. The reversal of 245166505 is 505661542.

It can be written as a sum of positive squares in 4 ways, for example, as 61591104 + 183575401 = 7848^2 + 13549^2 .

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 245166505 - 2¹⁹ = 244642217 is a prime.

It is a Duffinian 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, 9597 + ... + 24133.

It is an arithmetic number, because the mean of its divisors is an integer number (36788409).

Almost surely, 2^245166505 is an apocalyptic number.

It is an amenable number.

245166505 is a deficient number, since it is larger than the sum of its proper divisors (49140767).

245166505 is a wasteful number, since it uses less digits than its factorization.

245166505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17915.

The product of its (nonzero) digits is 36000, while the sum is 34.

The square root of 245166505 is about 15657.7937462466. The cubic root of 245166505 is about 625.8741942849.

It can be divided in two parts, 24 and 5166505, that added together give a square (5166529 = 2273²).

The spelling of 245166505 in words is "two hundred forty-five million, one hundred sixty-six thousand, five hundred five".