247225172 has 6 divisors (see below), whose sum is σ = 432644058. Its totient is φ = 123612584.

The previous prime is 247225171. The next prime is 247225177. The reversal of 247225172 is 271522742.

247225172 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 243484816 + 3740356 = 15604^2 + 1934^2 .

It is a super-2 number, since 2×247225172² = 122240571340859168, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (247225171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30903143 + ... + 30903150.

It is an arithmetic number, because the mean of its divisors is an integer number (72107343).

Almost surely, 2^247225172 is an apocalyptic number.

It is an amenable number.

247225172 is a deficient number, since it is larger than the sum of its proper divisors (185418886).

247225172 is a wasteful number, since it uses less digits than its factorization.

247225172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61806297 (or 61806295 counting only the distinct ones).

The product of its digits is 15680, while the sum is 32.

The square root of 247225172 is about 15723.3956892269. The cubic root of 247225172 is about 627.6211388164.

The spelling of 247225172 in words is "two hundred forty-seven million, two hundred twenty-five thousand, one hundred seventy-two".