172938501 has 12 divisors (see below), whose sum is σ = 264494412. Its totient is φ = 108510336.

The previous prime is 172938461. The next prime is 172938503. The reversal of 172938501 is 105839271.

It can be written as a sum of positive squares in 2 ways, for example, as 154405476 + 18533025 = 12426^2 + 4305^2 .

It is not a de Polignac number, because 172938501 - 2⁷ = 172938373 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 (172938503) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 565006 + ... + 565311.

It is an arithmetic number, because the mean of its divisors is an integer number (22041201).

Almost surely, 2^172938501 is an apocalyptic number.

It is an amenable number.

172938501 is a deficient number, since it is larger than the sum of its proper divisors (91555911).

172938501 is a wasteful number, since it uses less digits than its factorization.

172938501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1130340 (or 1130337 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 36.

The square root of 172938501 is about 13150.6083889682. The cubic root of 172938501 is about 557.1394315653.

The spelling of 172938501 in words is "one hundred seventy-two million, nine hundred thirty-eight thousand, five hundred one".