2536021 has 8 divisors (see below), whose sum is σ = 2644920. Its totient is φ = 2428608.

The previous prime is 2536019. The next prime is 2536031. The reversal of 2536021 is 1206352.

It is a happy number.

2536021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 7921 + 2528100 = 89^2 + 1590^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2536021 - 2¹ = 2536019 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 2536021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2536031) 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 7 ways as a sum of consecutive naturals, for example, 4275 + ... + 4831.

It is an arithmetic number, because the mean of its divisors is an integer number (330615).

2^2536021 is an apocalyptic number.

It is an amenable number.

2536021 is a deficient number, since it is larger than the sum of its proper divisors (108899).

2536021 is a wasteful number, since it uses less digits than its factorization.

2536021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 743.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 2536021 is about 1592.4889324576. The cubic root of 2536021 is about 136.3696152395.

It can be divided in two parts, 25 and 36021, that added together give a triangular number (36046 = T₂₆₈).

The spelling of 2536021 in words is "two million, five hundred thirty-six thousand, twenty-one".