2530021 has 8 divisors (see below), whose sum is σ = 2868320. Its totient is φ = 2212272.

The previous prime is 2530013. The next prime is 2530039. The reversal of 2530021 is 1200352.

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 2530021 - 2³ = 2530013 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a junction number, because it is equal to n+sod(n) for n = 2529983 and 2530010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2530001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4875 + ... + 5368.

It is an arithmetic number, because the mean of its divisors is an integer number (358540).

2^2530021 is an apocalyptic number.

It is an amenable number.

2530021 is a deficient number, since it is larger than the sum of its proper divisors (338299).

2530021 is a wasteful number, since it uses less digits than its factorization.

2530021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10275.

The product of its (nonzero) digits is 60, while the sum is 13.

The square root of 2530021 is about 1590.6039733384. The cubic root of 2530021 is about 136.2619841884.

Adding to 2530021 its reverse (1200352), we get a palindrome (3730373).

The spelling of 2530021 in words is "two million, five hundred thirty thousand, twenty-one".