2553421 has 12 divisors (see below), whose sum is σ = 2865780. Its totient is φ = 2271360.

The previous prime is 2553409. The next prime is 2553427. The reversal of 2553421 is 1243552.

It can be written as a sum of positive squares in 6 ways, for example, as 562500 + 1990921 = 750^2 + 1411^2 .

It is not a de Polignac number, because 2553421 - 2⁵ = 2553389 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2553392 and 2553401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2553427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4641 + ... + 5161.

It is an arithmetic number, because the mean of its divisors is an integer number (238815).

2^2553421 is an apocalyptic number.

It is an amenable number.

2553421 is a deficient number, since it is larger than the sum of its proper divisors (312359).

2553421 is a wasteful number, since it uses less digits than its factorization.

2553421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 576 (or 563 counting only the distinct ones).

The product of its digits is 1200, while the sum is 22.

The square root of 2553421 is about 1597.9427399003. The cubic root of 2553421 is about 136.6807884145.

Adding to 2553421 its reverse (1243552), we get a palindrome (3796973).

The spelling of 2553421 in words is "two million, five hundred fifty-three thousand, four hundred twenty-one".