172138052 has 12 divisors (see below), whose sum is σ = 301486080. Its totient is φ = 85999176.

The previous prime is 172138033. The next prime is 172138063. The reversal of 172138052 is 250831271.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11708 + ... + 21939.

It is an arithmetic number, because the mean of its divisors is an integer number (25123840).

Almost surely, 2^172138052 is an apocalyptic number.

It is an amenable number.

172138052 is a deficient number, since it is larger than the sum of its proper divisors (129348028).

172138052 is a wasteful number, since it uses less digits than its factorization.

172138052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34930 (or 34928 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 29.

The square root of 172138052 is about 13120.1391760911. The cubic root of 172138052 is about 556.2785252888.

The spelling of 172138052 in words is "one hundred seventy-two million, one hundred thirty-eight thousand, fifty-two".