2861541 has 8 divisors (see below), whose sum is σ = 4239360. Its totient is φ = 1907676.

The previous prime is 2861539. The next prime is 2861549. The reversal of 2861541 is 1451682.

2861541 is a `hidden beast` number, since 2 + 8 + 615 + 41 = 666.

It is not a de Polignac number, because 2861541 - 2¹ = 2861539 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 105983 = 2861541 / (2 + 8 + 6 + 1 + 5 + 4 + 1).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2861549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52965 + ... + 53018.

It is an arithmetic number, because the mean of its divisors is an integer number (529920).

2^2861541 is an apocalyptic number.

It is an amenable number.

2861541 is a deficient number, since it is larger than the sum of its proper divisors (1377819).

2861541 is a wasteful number, since it uses less digits than its factorization.

2861541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105992 (or 105986 counting only the distinct ones).

The product of its digits is 1920, while the sum is 27.

The square root of 2861541 is about 1691.6089973750. The cubic root of 2861541 is about 141.9711142726.

The spelling of 2861541 in words is "two million, eight hundred sixty-one thousand, five hundred forty-one".