4945145 has 4 divisors (see below), whose sum is σ = 5934180. Its totient is φ = 3956112.

The previous prime is 4945141. The next prime is 4945153. The reversal of 4945145 is 5415494.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1087849 + 3857296 = 1043^2 + 1964^2 .

It is a cyclic number.

It is not a de Polignac number, because 4945145 - 2² = 4945141 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4945141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 494510 + ... + 494519.

It is an arithmetic number, because the mean of its divisors is an integer number (1483545).

Almost surely, 2^4945145 is an apocalyptic number.

It is an amenable number.

4945145 is a deficient number, since it is larger than the sum of its proper divisors (989035).

4945145 is an equidigital number, since it uses as much as digits as its factorization.

4945145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 989034.

The product of its digits is 14400, while the sum is 32.

The square root of 4945145 is about 2223.7681983516. The cubic root of 4945145 is about 170.3699555610.

The spelling of 4945145 in words is "four million, nine hundred forty-five thousand, one hundred forty-five".