2621253 has 16 divisors (see below), whose sum is σ = 3632832. Its totient is φ = 1680000.

The previous prime is 2621239. The next prime is 2621257. The reversal of 2621253 is 3521262.

It is not a de Polignac number, because 2621253 - 2⁹ = 2620741 is a prime.

It is a d-powerful number, because it can be written as 2¹⁷ + 6³ + 2²⁰ + 1 + 2²⁰ + 5⁸ + 3⁷ .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2621257) 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, 12318 + ... + 12528.

It is an arithmetic number, because the mean of its divisors is an integer number (227052).

2^2621253 is an apocalyptic number.

It is an amenable number.

2621253 is a deficient number, since it is larger than the sum of its proper divisors (1011579).

2621253 is a wasteful number, since it uses less digits than its factorization.

2621253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 356.

The product of its digits is 720, while the sum is 21.

The square root of 2621253 is about 1619.0284123511. The cubic root of 2621253 is about 137.8805414440.

Subtracting 2621253 from its reverse (3521262), we obtain a palindrome (900009).

The spelling of 2621253 in words is "two million, six hundred twenty-one thousand, two hundred fifty-three".