172300745 has 16 divisors (see below), whose sum is σ = 214866000. Its totient is φ = 132480768.

The previous prime is 172300717. The next prime is 172300757. The reversal of 172300745 is 547003271.

It can be written as a sum of positive squares in 8 ways, for example, as 20912329 + 151388416 = 4573^2 + 12304^2 .

It is a cyclic number.

It is not a de Polignac number, because 172300745 - 2²⁶ = 105191881 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30611 + ... + 35799.

It is an arithmetic number, because the mean of its divisors is an integer number (13429125).

Almost surely, 2^172300745 is an apocalyptic number.

It is an amenable number.

172300745 is a deficient number, since it is larger than the sum of its proper divisors (42565255).

172300745 is a wasteful number, since it uses less digits than its factorization.

172300745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5452.

The product of its (nonzero) digits is 5880, while the sum is 29.

The square root of 172300745 is about 13126.3378365788. The cubic root of 172300745 is about 556.4537221221.

The spelling of 172300745 in words is "one hundred seventy-two million, three hundred thousand, seven hundred forty-five".