16170145 has 16 divisors (see below), whose sum is σ = 20649168. Its totient is φ = 12113920.

The previous prime is 16170131. The next prime is 16170169. The reversal of 16170145 is 54107161.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 4004001 + 12166144 = 2001^2 + 3488^2 .

It is not a de Polignac number, because 16170145 - 2⁷ = 16170017 is a prime.

It is a super-2 number, since 2×16170145² = 522947178642050, which contains 22 as substring.

It is a Duffinian number.

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, 23547 + ... + 24223.

It is an arithmetic number, because the mean of its divisors is an integer number (1290573).

Almost surely, 2^16170145 is an apocalyptic number.

It is an amenable number.

16170145 is a deficient number, since it is larger than the sum of its proper divisors (4479023).

16170145 is a wasteful number, since it uses less digits than its factorization.

16170145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 980.

The product of its (nonzero) digits is 840, while the sum is 25.

The square root of 16170145 is about 4021.2118820077. The cubic root of 16170145 is about 252.8742676980.

The spelling of 16170145 in words is "sixteen million, one hundred seventy thousand, one hundred forty-five".