172053734 has 4 divisors (see below), whose sum is σ = 258080604. Its totient is φ = 86026866.

The previous prime is 172053709. The next prime is 172053743. The reversal of 172053734 is 437350271.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 437350271 = 1381 ⋅316691.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 172053734.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43013432 + ... + 43013435.

It is an arithmetic number, because the mean of its divisors is an integer number (64520151).

Almost surely, 2^172053734 is an apocalyptic number.

172053734 is a deficient number, since it is larger than the sum of its proper divisors (86026870).

172053734 is an equidigital number, since it uses as much as digits as its factorization.

172053734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86026869.

The product of its (nonzero) digits is 17640, while the sum is 32.

The square root of 172053734 is about 13116.9254781751. The cubic root of 172053734 is about 556.1876835631.

The spelling of 172053734 in words is "one hundred seventy-two million, fifty-three thousand, seven hundred thirty-four".