172743045 has 16 divisors (see below), whose sum is σ = 283131072. Its totient is φ = 89882240.

The previous prime is 172743031. The next prime is 172743049. The reversal of 172743045 is 540347271.

172743045 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 172743045 - 2⁴ = 172743029 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 172742997 and 172743015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172743049) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 139827 + ... + 141056.

It is an arithmetic number, because the mean of its divisors is an integer number (17695692).

Almost surely, 2^172743045 is an apocalyptic number.

172743045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

172743045 is a deficient number, since it is larger than the sum of its proper divisors (110388027).

172743045 is a wasteful number, since it uses less digits than its factorization.

172743045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280932.

The product of its (nonzero) digits is 23520, while the sum is 33.

The square root of 172743045 is about 13143.1748447626. The cubic root of 172743045 is about 556.9294584729.

The spelling of 172743045 in words is "one hundred seventy-two million, seven hundred forty-three thousand, forty-five".