4541861 has 4 divisors (see below), whose sum is σ = 4664652. Its totient is φ = 4419072.

The previous prime is 4541851. The next prime is 4541891. The reversal of 4541861 is 1681454.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1681454 = 2 ⋅840727.

It can be written as a sum of positive squares in 2 ways, for example, as 2825761 + 1716100 = 1681^2 + 1310^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4541861 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4541821) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 61340 + ... + 61413.

It is an arithmetic number, because the mean of its divisors is an integer number (1166163).

Almost surely, 2^4541861 is an apocalyptic number.

It is an amenable number.

4541861 is a deficient number, since it is larger than the sum of its proper divisors (122791).

4541861 is a wasteful number, since it uses less digits than its factorization.

4541861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122790.

The product of its digits is 3840, while the sum is 29.

The square root of 4541861 is about 2131.1642358110. The cubic root of 4541861 is about 165.6067164343.

The spelling of 4541861 in words is "four million, five hundred forty-one thousand, eight hundred sixty-one".