172140651 has 6 divisors (see below), whose sum is σ = 248647620. Its totient is φ = 114760428.

The previous prime is 172140629. The next prime is 172140667. The reversal of 172140651 is 156041271.

It is a happy number.

172140651 is a `hidden beast` number, since 1 + 7 + 2 + 1 + 4 + 0 + 651 = 666.

It is not a de Polignac number, because 172140651 - 2⁷ = 172140523 is a prime.

It is not an unprimeable number, because it can be changed into a prime (172140251) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9563361 + ... + 9563378.

It is an arithmetic number, because the mean of its divisors is an integer number (41441270).

Almost surely, 2^172140651 is an apocalyptic number.

172140651 is a deficient number, since it is larger than the sum of its proper divisors (76506969).

172140651 is a wasteful number, since it uses less digits than its factorization.

172140651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19126745 (or 19126742 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 27.

The square root of 172140651 is about 13120.2382219226. The cubic root of 172140651 is about 556.2813249034.

The spelling of 172140651 in words is "one hundred seventy-two million, one hundred forty thousand, six hundred fifty-one".