172058145 has 16 divisors (see below), whose sum is σ = 314620800. Its totient is φ = 78655104.

The previous prime is 172058143. The next prime is 172058191. The reversal of 172058145 is 541850271.

It is not a de Polignac number, because 172058145 - 2¹ = 172058143 is a prime.

It is not an unprimeable number, because it can be changed into a prime (172058141) 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, 819220 + ... + 819429.

It is an arithmetic number, because the mean of its divisors is an integer number (19663800).

Almost surely, 2^172058145 is an apocalyptic number.

172058145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

172058145 is a deficient number, since it is larger than the sum of its proper divisors (142562655).

172058145 is a wasteful number, since it uses less digits than its factorization.

172058145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1638664.

The product of its (nonzero) digits is 11200, while the sum is 33.

The square root of 172058145 is about 13117.0936186337. The cubic root of 172058145 is about 556.1924365800.

The spelling of 172058145 in words is "one hundred seventy-two million, fifty-eight thousand, one hundred forty-five".