2555421 has 16 divisors (see below), whose sum is σ = 3744768. Its totient is φ = 1537200.

The previous prime is 2555363. The next prime is 2555429. The reversal of 2555421 is 1245552.

It is a happy number.

It is not a de Polignac number, because 2555421 - 2¹⁰ = 2554397 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2555391 and 2555400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2555429) 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, 6780 + ... + 7146.

It is an arithmetic number, because the mean of its divisors is an integer number (234048).

2^2555421 is an apocalyptic number.

It is an amenable number.

2555421 is a deficient number, since it is larger than the sum of its proper divisors (1189347).

2555421 is a wasteful number, since it uses less digits than its factorization.

2555421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 592.

The product of its digits is 2000, while the sum is 24.

The square root of 2555421 is about 1598.5684220577. The cubic root of 2555421 is about 136.7164647662.

The spelling of 2555421 in words is "two million, five hundred fifty-five thousand, four hundred twenty-one".