172201029 has 72 divisors (see below), whose sum is σ = 313096896. Its totient is φ = 82368000.

The previous prime is 172201021. The next prime is 172201037. The reversal of 172201029 is 920102271.

It is an interprime number because it is at equal distance from previous prime (172201021) and next prime (172201037).

It is not a de Polignac number, because 172201029 - 2³ = 172201021 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172201021) by changing a digit.

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 71 ways as a sum of consecutive naturals, for example, 429229 + ... + 429629.

It is an arithmetic number, because the mean of its divisors is an integer number (4348568).

Almost surely, 2^172201029 is an apocalyptic number.

It is an amenable number.

172201029 is a deficient number, since it is larger than the sum of its proper divisors (140895867).

172201029 is a wasteful number, since it uses less digits than its factorization.

172201029 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 459 (or 435 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 24.

The square root of 172201029 is about 13122.5389692696. The cubic root of 172201029 is about 556.3463555001.

The spelling of 172201029 in words is "one hundred seventy-two million, two hundred one thousand, twenty-nine".