2519221 has 2 divisors, whose sum is σ = 2519222. Its totient is φ = 2519220.

The previous prime is 2519197. The next prime is 2519263. The reversal of 2519221 is 1229152.

2519221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2280100 + 239121 = 1510^2 + 489^2 .

It is a cyclic number.

It is not a de Polignac number, because 2519221 - 2⁵ = 2519189 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2519192 and 2519201.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2519021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1259610 + 1259611.

It is an arithmetic number, because the mean of its divisors is an integer number (1259611).

2^2519221 is an apocalyptic number.

It is an amenable number.

2519221 is a deficient number, since it is larger than the sum of its proper divisors (1).

2519221 is an equidigital number, since it uses as much as digits as its factorization.

2519221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 360, while the sum is 22.

The square root of 2519221 is about 1587.2054057368. The cubic root of 2519221 is about 136.0678186841.

The spelling of 2519221 in words is "two million, five hundred nineteen thousand, two hundred twenty-one".