2554861 has 4 divisors (see below), whose sum is σ = 2571292. Its totient is φ = 2538432.

The previous prime is 2554843. The next prime is 2554891. The reversal of 2554861 is 1684552.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1755625 + 799236 = 1325^2 + 894^2 .

It is a cyclic number.

It is not a de Polignac number, because 2554861 - 2⁵ = 2554829 is a prime.

It is a super-3 number, since 3×2554861³ = 50029145510003338143, which contains 333 as substring.

It is a Duffinian number.

2554861 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2554801) 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, 7980 + ... + 8293.

It is an arithmetic number, because the mean of its divisors is an integer number (642823).

2^2554861 is an apocalyptic number.

It is an amenable number.

2554861 is a deficient number, since it is larger than the sum of its proper divisors (16431).

2554861 is a wasteful number, since it uses less digits than its factorization.

2554861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16430.

The product of its digits is 9600, while the sum is 31.

The square root of 2554861 is about 1598.3932557415. The cubic root of 2554861 is about 136.7064772646.

The spelling of 2554861 in words is "two million, five hundred fifty-four thousand, eight hundred sixty-one".