2530421 has 8 divisors (see below), whose sum is σ = 2624160. Its totient is φ = 2438352.

The previous prime is 2530403. The next prime is 2530427. The reversal of 2530421 is 1240352.

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 2530421 - 2⁶ = 2530357 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 2530421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2530427) 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, 3215 + ... + 3923.

It is an arithmetic number, because the mean of its divisors is an integer number (328020).

2^2530421 is an apocalyptic number.

It is an amenable number.

2530421 is a deficient number, since it is larger than the sum of its proper divisors (93739).

2530421 is an equidigital number, since it uses as much as digits as its factorization.

2530421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 835.

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 2530421 is about 1590.7297067698. The cubic root of 2530421 is about 136.2691648826.

Adding to 2530421 its reverse (1240352), we get a palindrome (3770773).

The spelling of 2530421 in words is "two million, five hundred thirty thousand, four hundred twenty-one".