4785145 has 16 divisors (see below), whose sum is σ = 6048720. Its totient is φ = 3628800.

The previous prime is 4785119. The next prime is 4785161. The reversal of 4785145 is 5415874.

4785145 = T₁₃₁ + T₁₃₂ + ... + T₃₁₃.

It can be written as a sum of positive squares in 8 ways, for example, as 769129 + 4016016 = 877^2 + 2004^2 .

It is not a de Polignac number, because 4785145 - 2⁵ = 4785113 is a prime.

It is a super-2 number, since 2×4785145² = 45795225342050, which contains 22 as substring.

It is an Ulam number.

4785145 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 4785145.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8575 + ... + 9115.

It is an arithmetic number, because the mean of its divisors is an integer number (378045).

Almost surely, 2^4785145 is an apocalyptic number.

It is an amenable number.

4785145 is a deficient number, since it is larger than the sum of its proper divisors (1263575).

4785145 is a wasteful number, since it uses less digits than its factorization.

4785145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 636.

The product of its digits is 22400, while the sum is 34.

The square root of 4785145 is about 2187.4974285699. The cubic root of 4785145 is about 168.5123366771.

The spelling of 4785145 in words is "four million, seven hundred eighty-five thousand, one hundred forty-five".