4540861 has 12 divisors (see below), whose sum is σ = 4985652. Its totient is φ = 4133376.

The previous prime is 4540807. The next prime is 4540883. The reversal of 4540861 is 1680454.

It can be written as a sum of positive squares in 6 ways, for example, as 1425636 + 3115225 = 1194^2 + 1765^2 .

It is not a de Polignac number, because 4540861 - 2¹³ = 4532669 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4540061) 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, 16255 + ... + 16531.

It is an arithmetic number, because the mean of its divisors is an integer number (415471).

Almost surely, 2^4540861 is an apocalyptic number.

It is an amenable number.

4540861 is a deficient number, since it is larger than the sum of its proper divisors (444791).

4540861 is a wasteful number, since it uses less digits than its factorization.

4540861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 400 (or 387 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 4540861 is about 2130.9296093489. The cubic root of 4540861 is about 165.5945614409.

The spelling of 4540861 in words is "four million, five hundred forty thousand, eight hundred sixty-one".