2555611 has 4 divisors (see below), whose sum is σ = 2558952. Its totient is φ = 2552272.

The previous prime is 2555591. The next prime is 2555617. The reversal of 2555611 is 1165552.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 2555611 - 2⁹ = 2555099 is a prime.

It is a super-2 number, since 2×2555611² = 13062295166642, which contains 22 as substring.

It is a Duffinian number.

2555611 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2555617) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 111 + ... + 2263.

It is an arithmetic number, because the mean of its divisors is an integer number (639738).

2^2555611 is an apocalyptic number.

2555611 is a deficient number, since it is larger than the sum of its proper divisors (3341).

2555611 is a wasteful number, since it uses less digits than its factorization.

2555611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3340.

The product of its digits is 1500, while the sum is 25.

The square root of 2555611 is about 1598.6278491256. The cubic root of 2555611 is about 136.7198530512.

The spelling of 2555611 in words is "two million, five hundred fifty-five thousand, six hundred eleven".