245012172 has 12 divisors (see below), whose sum is σ = 571695096. Its totient is φ = 81670720.

The previous prime is 245012171. The next prime is 245012179. The reversal of 245012172 is 271210542.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (245012171) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10208829 + ... + 10208852.

It is an arithmetic number, because the mean of its divisors is an integer number (47641258).

Almost surely, 2^245012172 is an apocalyptic number.

It is an amenable number.

245012172 is an abundant number, since it is smaller than the sum of its proper divisors (326682924).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

245012172 is a wasteful number, since it uses less digits than its factorization.

245012172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20417688 (or 20417686 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 24.

The square root of 245012172 is about 15652.8646579468. The cubic root of 245012172 is about 625.7428368663.

The spelling of 245012172 in words is "two hundred forty-five million, twelve thousand, one hundred seventy-two".