2521019 has 2 divisors, whose sum is σ = 2521020. Its totient is φ = 2521018.

The previous prime is 2521003. The next prime is 2521021. The reversal of 2521019 is 9101252.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2521019 - 2⁴ = 2521003 is a prime.

It is a super-2 number, since 2×2521019² = 12711073596722, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 2521021, it forms a pair of twin primes.

It is a Chen prime.

It is a plaindrome in base 16.

It is not a weakly prime, because it can be changed into another prime (2521039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1260509 + 1260510.

It is an arithmetic number, because the mean of its divisors is an integer number (1260510).

2^2521019 is an apocalyptic number.

2521019 is a deficient number, since it is larger than the sum of its proper divisors (1).

2521019 is an equidigital number, since it uses as much as digits as its factorization.

2521019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 180, while the sum is 20.

The square root of 2521019 is about 1587.7717090312. The cubic root of 2521019 is about 136.1001820956.

The spelling of 2521019 in words is "two million, five hundred twenty-one thousand, nineteen".