2553641 has 4 divisors (see below), whose sum is σ = 2613072. Its totient is φ = 2494212.

The previous prime is 2553637. The next prime is 2553647. The reversal of 2553641 is 1463552.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2553641 - 2² = 2553637 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2553641.

It is not an unprimeable number, because it can be changed into a prime (2553647) 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 3 ways as a sum of consecutive naturals, for example, 29651 + ... + 29736.

It is an arithmetic number, because the mean of its divisors is an integer number (653268).

2^2553641 is an apocalyptic number.

It is an amenable number.

2553641 is a deficient number, since it is larger than the sum of its proper divisors (59431).

2553641 is an equidigital number, since it uses as much as digits as its factorization.

2553641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59430.

The product of its digits is 3600, while the sum is 26.

The square root of 2553641 is about 1598.0115769293. The cubic root of 2553641 is about 136.6847137249.

The spelling of 2553641 in words is "two million, five hundred fifty-three thousand, six hundred forty-one".