4905145 has 12 divisors (see below), whose sum is σ = 6847524. Its totient is φ = 3363360.

The previous prime is 4905143. The next prime is 4905149. The reversal of 4905145 is 5415094.

It can be written as a sum of positive squares in 2 ways, for example, as 840889 + 4064256 = 917^2 + 2016^2 .

It is not a de Polignac number, because 4905145 - 2¹ = 4905143 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4905143) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9766 + ... + 10255.

It is an arithmetic number, because the mean of its divisors is an integer number (570627).

Almost surely, 2^4905145 is an apocalyptic number.

It is an amenable number.

4905145 is a deficient number, since it is larger than the sum of its proper divisors (1942379).

4905145 is a wasteful number, since it uses less digits than its factorization.

4905145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20040 (or 20033 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 4905145 is about 2214.7561942571. The cubic root of 4905145 is about 169.9093519035.

It can be divided in two parts, 4905 and 145, that added together give a triangular number (5050 = T₁₀₀).

The spelling of 4905145 in words is "four million, nine hundred five thousand, one hundred forty-five".