172540367 has 4 divisors (see below), whose sum is σ = 175464840. Its totient is φ = 169615896.

The previous prime is 172540321. The next prime is 172540369. The reversal of 172540367 is 763045271.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 763045271 = 251 ⋅3040021.

It is a cyclic number.

It is not a de Polignac number, because 172540367 - 2¹⁰ = 172539343 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172540369) 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 3 ways as a sum of consecutive naturals, for example, 1462148 + ... + 1462265.

It is an arithmetic number, because the mean of its divisors is an integer number (43866210).

Almost surely, 2^172540367 is an apocalyptic number.

172540367 is a deficient number, since it is larger than the sum of its proper divisors (2924473).

172540367 is an equidigital number, since it uses as much as digits as its factorization.

172540367 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2924472.

The product of its (nonzero) digits is 35280, while the sum is 35.

The square root of 172540367 is about 13135.4621920966. The cubic root of 172540367 is about 556.7115596402.

The spelling of 172540367 in words is "one hundred seventy-two million, five hundred forty thousand, three hundred sixty-seven".