2601553 has 4 divisors (see below), whose sum is σ = 2714688. Its totient is φ = 2488420.

The previous prime is 2601539. The next prime is 2601563. The reversal of 2601553 is 3551062.

It is a happy number.

2601553 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 2601553 - 2⁹ = 2601041 is a prime.

It is a Duffinian number.

2601553 is a lucky number.

It is a zygodrome in base 3.

It is not an unprimeable number, because it can be changed into a prime (2601523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56533 + ... + 56578.

It is an arithmetic number, because the mean of its divisors is an integer number (678672).

2^2601553 is an apocalyptic number.

2601553 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

2601553 is a deficient number, since it is larger than the sum of its proper divisors (113135).

2601553 is a wasteful number, since it uses less digits than its factorization.

2601553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113134.

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 2601553 is about 1612.9330426276. The cubic root of 2601553 is about 137.5342592319.

The spelling of 2601553 in words is "two million, six hundred one thousand, five hundred fifty-three".