4155641 has 6 divisors (see below), whose sum is σ = 4834170. Its totient is φ = 3561936.

The previous prime is 4155631. The next prime is 4155647. The reversal of 4155641 is 1465514.

It can be written as a sum of positive squares in only one way, i.e., 2706025 + 1449616 = 1645^2 + 1204^2 .

It is not a de Polignac number, because 4155641 - 2¹⁸ = 3893497 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4155641.

It is not an unprimeable number, because it can be changed into a prime (4155647) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 42356 + ... + 42453.

It is an arithmetic number, because the mean of its divisors is an integer number (805695).

Almost surely, 2^4155641 is an apocalyptic number.

It is an amenable number.

4155641 is a deficient number, since it is larger than the sum of its proper divisors (678529).

4155641 is an equidigital number, since it uses as much as digits as its factorization.

4155641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84823 (or 84816 counting only the distinct ones).

The product of its digits is 2400, while the sum is 26.

The square root of 4155641 is about 2038.5389375727. The cubic root of 4155641 is about 160.7728365335.

The spelling of 4155641 in words is "four million, one hundred fifty-five thousand, six hundred forty-one".