2521427 has 4 divisors (see below), whose sum is σ = 2531496. Its totient is φ = 2511360.

The previous prime is 2521417. The next prime is 2521429. The reversal of 2521427 is 7241252.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2521427 - 2⁸ = 2521171 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2521429) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4649 + ... + 5162.

It is an arithmetic number, because the mean of its divisors is an integer number (632874).

2^2521427 is an apocalyptic number.

2521427 is a deficient number, since it is larger than the sum of its proper divisors (10069).

2521427 is an equidigital number, since it uses as much as digits as its factorization.

2521427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10068.

The product of its digits is 1120, while the sum is 23.

The square root of 2521427 is about 1587.9001857800. The cubic root of 2521427 is about 136.1075238199.

Adding to 2521427 its reverse (7241252), we get a palindrome (9762679).

The spelling of 2521427 in words is "two million, five hundred twenty-one thousand, four hundred twenty-seven".