2550861 has 12 divisors (see below), whose sum is σ = 3845088. Its totient is φ = 1626504.

The previous prime is 2550859. The next prime is 2550871. The reversal of 2550861 is 1680552.

It is not a de Polignac number, because 2550861 - 2¹ = 2550859 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2550871) 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, 5955 + ... + 6368.

It is an arithmetic number, because the mean of its divisors is an integer number (320424).

2^2550861 is an apocalyptic number.

It is an amenable number.

2550861 is a deficient number, since it is larger than the sum of its proper divisors (1294227).

2550861 is a wasteful number, since it uses less digits than its factorization.

2550861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12352 (or 12349 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

The square root of 2550861 is about 1597.1415090718. The cubic root of 2550861 is about 136.6350954901.

The spelling of 2550861 in words is "two million, five hundred fifty thousand, eight hundred sixty-one".