2521147 has 2 divisors, whose sum is σ = 2521148. Its totient is φ = 2521146.

The previous prime is 2521111. The next prime is 2521153. The reversal of 2521147 is 7411252.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2521147 - 2⁷ = 2521019 is a prime.

It is not a weakly prime, because it can be changed into another prime (2521747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1260573 + 1260574.

It is an arithmetic number, because the mean of its divisors is an integer number (1260574).

2^2521147 is an apocalyptic number.

2521147 is a deficient number, since it is larger than the sum of its proper divisors (1).

2521147 is an equidigital number, since it uses as much as digits as its factorization.

2521147 is an evil number, because the sum of its binary digits is even.

The product of its digits is 560, while the sum is 22.

The square root of 2521147 is about 1587.8120165813. The cubic root of 2521147 is about 136.1024854669.

Adding to 2521147 its reverse (7411252), we get a palindrome (9932399).

The spelling of 2521147 in words is "two million, five hundred twenty-one thousand, one hundred forty-seven".