154231172 has 6 divisors (see below), whose sum is σ = 269904558. Its totient is φ = 77115584.

The previous prime is 154231171. The next prime is 154231177. The reversal of 154231172 is 271132451.

It can be written as a sum of positive squares in only one way, i.e., 141514816 + 12716356 = 11896^2 + 3566^2 .

It is not an unprimeable number, because it can be changed into a prime (154231171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19278893 + ... + 19278900.

It is an arithmetic number, because the mean of its divisors is an integer number (44984093).

Almost surely, 2^154231172 is an apocalyptic number.

It is an amenable number.

154231172 is a deficient number, since it is larger than the sum of its proper divisors (115673386).

154231172 is a wasteful number, since it uses less digits than its factorization.

154231172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38557797 (or 38557795 counting only the distinct ones).

The product of its digits is 1680, while the sum is 26.

The square root of 154231172 is about 12418.9843385037. The cubic root of 154231172 is about 536.2789119804.

The spelling of 154231172 in words is "one hundred fifty-four million, two hundred thirty-one thousand, one hundred seventy-two".