245195172 has 36 divisors (see below), whose sum is σ = 631498140. Its totient is φ = 80188992.

The previous prime is 245195161. The next prime is 245195177. The reversal of 245195172 is 271591542.

245195172 is a `hidden beast` number, since 24 + 519 + 51 + 72 = 666.

245195172 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 182088036 + 63107136 = 13494^2 + 7944^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (245195177) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 62347 + ... + 66162.

It is an arithmetic number, because the mean of its divisors is an integer number (17541615).

Almost surely, 2^245195172 is an apocalyptic number.

It is an amenable number.

245195172 is an abundant number, since it is smaller than the sum of its proper divisors (386302968).

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

245195172 is a wasteful number, since it uses less digits than its factorization.

245195172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128572 (or 128567 counting only the distinct ones).

The product of its digits is 25200, while the sum is 36.

The square root of 245195172 is about 15658.7091421994. The cubic root of 245195172 is about 625.8985875522.

The spelling of 245195172 in words is "two hundred forty-five million, one hundred ninety-five thousand, one hundred seventy-two".