2521361 has 2 divisors, whose sum is σ = 2521362. Its totient is φ = 2521360.

The previous prime is 2521339. The next prime is 2521367. The reversal of 2521361 is 1631252.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1809025 + 712336 = 1345^2 + 844^2 .

It is a cyclic number.

It is not a de Polignac number, because 2521361 - 2⁶ = 2521297 is a prime.

It is a super-2 number, since 2×2521361² = 12714522584642, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2521367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1260680 + 1260681.

It is an arithmetic number, because the mean of its divisors is an integer number (1260681).

2^2521361 is an apocalyptic number.

It is an amenable number.

2521361 is a deficient number, since it is larger than the sum of its proper divisors (1).

2521361 is an equidigital number, since it uses as much as digits as its factorization.

2521361 is an evil number, because the sum of its binary digits is even.

The product of its digits is 360, while the sum is 20.

The square root of 2521361 is about 1587.8794034813. The cubic root of 2521361 is about 136.1063362417.

It can be divided in two parts, 2521 and 361, that added together give a palindrome (2882).

The spelling of 2521361 in words is "two million, five hundred twenty-one thousand, three hundred sixty-one".