172674145 has 16 divisors (see below), whose sum is σ = 239159808. Its totient is φ = 117230400.

The previous prime is 172674143. The next prime is 172674157. The reversal of 172674145 is 541476271.

It is not a de Polignac number, because 172674145 - 2¹ = 172674143 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (172674143) 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, 20889 + ... + 27958.

It is an arithmetic number, because the mean of its divisors is an integer number (14947488).

Almost surely, 2^172674145 is an apocalyptic number.

It is an amenable number.

172674145 is a deficient number, since it is larger than the sum of its proper divisors (66485663).

172674145 is a wasteful number, since it uses less digits than its factorization.

172674145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48960.

The product of its digits is 47040, while the sum is 37.

The square root of 172674145 is about 13140.5534510537. The cubic root of 172674145 is about 556.8554033109.

It can be divided in two parts, 17267 and 4145, that added together give a palindrome (21412).

The spelling of 172674145 in words is "one hundred seventy-two million, six hundred seventy-four thousand, one hundred forty-five".