2720553 has 16 divisors (see below), whose sum is σ = 4166400. Its totient is φ = 1561680.

The previous prime is 2720551. The next prime is 2720563. The reversal of 2720553 is 3550272.

It is not a de Polignac number, because 2720553 - 2¹ = 2720551 is a prime.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (2720551) 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, 1543 + ... + 2796.

It is an arithmetic number, because the mean of its divisors is an integer number (260400).

2^2720553 is an apocalyptic number.

It is an amenable number.

2720553 is a deficient number, since it is larger than the sum of its proper divisors (1445847).

2720553 is a wasteful number, since it uses less digits than its factorization.

2720553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4372.

The product of its (nonzero) digits is 2100, while the sum is 24.

The square root of 2720553 is about 1649.4098944774. The cubic root of 2720553 is about 139.6001003001.

It can be divided in two parts, 27 and 20553, that multiplied together give a triangular number (554931 = T₁₀₅₃).

The spelling of 2720553 in words is "two million, seven hundred twenty thousand, five hundred fifty-three".