4571945 has 12 divisors (see below), whose sum is σ = 6382404. Its totient is φ = 3134880.

The previous prime is 4571927. The next prime is 4571947. The reversal of 4571945 is 5491754.

It can be written as a sum of positive squares in 2 ways, for example, as 946729 + 3625216 = 973^2 + 1904^2 .

It is not a de Polignac number, because 4571945 - 2¹⁴ = 4555561 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (4571947) 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, 9086 + ... + 9575.

It is an arithmetic number, because the mean of its divisors is an integer number (531867).

Almost surely, 2^4571945 is an apocalyptic number.

It is an amenable number.

4571945 is a deficient number, since it is larger than the sum of its proper divisors (1810459).

4571945 is a wasteful number, since it uses less digits than its factorization.

4571945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18680 (or 18673 counting only the distinct ones).

The product of its digits is 25200, while the sum is 35.

The square root of 4571945 is about 2138.2107005625. The cubic root of 4571945 is about 165.9715560690.

The spelling of 4571945 in words is "four million, five hundred seventy-one thousand, nine hundred forty-five".