172154212 has 24 divisors (see below), whose sum is σ = 322509600. Its totient is φ = 80162496.

The previous prime is 172154209. The next prime is 172154293. The reversal of 172154212 is 212451271.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14713 + ... + 23680.

It is an arithmetic number, because the mean of its divisors is an integer number (13437900).

Almost surely, 2^172154212 is an apocalyptic number.

It is an amenable number.

172154212 is a deficient number, since it is larger than the sum of its proper divisors (150355388).

172154212 is a wasteful number, since it uses less digits than its factorization.

172154212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38475 (or 38473 counting only the distinct ones).

The product of its digits is 1120, while the sum is 25.

The square root of 172154212 is about 13120.7550087638. The cubic root of 172154212 is about 556.2959322084.

The spelling of 172154212 in words is "one hundred seventy-two million, one hundred fifty-four thousand, two hundred twelve".