2445861 has 16 divisors (see below), whose sum is σ = 3590208. Its totient is φ = 1468800.

The previous prime is 2445857. The next prime is 2445881. The reversal of 2445861 is 1685442.

It is not a de Polignac number, because 2445861 - 2² = 2445857 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2445881) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4251 + ... + 4791.

It is an arithmetic number, because the mean of its divisors is an integer number (224388).

2^2445861 is an apocalyptic number.

It is an amenable number.

2445861 is a deficient number, since it is larger than the sum of its proper divisors (1144347).

2445861 is a wasteful number, since it uses less digits than its factorization.

2445861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 692.

The product of its digits is 7680, while the sum is 30.

The square root of 2445861 is about 1563.9248703183. The cubic root of 2445861 is about 134.7340167581.

It can be divided in two parts, 244 and 5861, that added together give a triangular number (6105 = T₁₁₀).

The spelling of 2445861 in words is "two million, four hundred forty-five thousand, eight hundred sixty-one".