2601855 has 16 divisors (see below), whose sum is σ = 4625760. Its totient is φ = 1387584.

The previous prime is 2601853. The next prime is 2601857. The reversal of 2601855 is 5581062.

2601855 is a `hidden beast` number, since 2 + 601 + 8 + 55 = 666.

It is an interprime number because it is at equal distance from previous prime (2601853) and next prime (2601857).

It is not a de Polignac number, because 2601855 - 2¹ = 2601853 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2601853) 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, 9502 + ... + 9771.

It is an arithmetic number, because the mean of its divisors is an integer number (289110).

2^2601855 is an apocalyptic number.

2601855 is a deficient number, since it is larger than the sum of its proper divisors (2023905).

2601855 is a wasteful number, since it uses less digits than its factorization.

2601855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19287 (or 19281 counting only the distinct ones).

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

The square root of 2601855 is about 1613.0266581802. The cubic root of 2601855 is about 137.5395808916.

The spelling of 2601855 in words is "two million, six hundred one thousand, eight hundred fifty-five".