2511389 has 2 divisors, whose sum is σ = 2511390.
Its totient is φ = 2511388.
The previous prime is 2511349. The next prime is 2511407. The reversal of 2511389 is 9831152.
It is a strong prime.
It can be written as a sum of positive squares in only one way, i.e., 2044900 + 466489 = 1430^2 + 683^2
It is a cyclic number.
It is not a de Polignac number, because 2511389 - 28 = 2511133 is a prime.
It is a Sophie Germain prime.
It is a Chen prime.
It is a Curzon number.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (2511319) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1255694 + 1255695.
It is an arithmetic number, because the mean of its divisors is an integer number (1255695).
22511389 is an apocalyptic number.
It is an amenable number.
2511389 is a deficient number, since it is larger than the sum of its proper divisors (1).
2511389 is an equidigital number, since it uses as much as digits as its factorization.
2511389 is an evil number, because the sum of its binary digits is even.
The product of its digits is 2160, while the sum is 29.
The square root of 2511389 is about 1584.7362556590.
The cubic root of 2511389 is about 135.9266653363.
The spelling of 2511389 in words is "two million, five hundred eleven thousand, three hundred eighty-nine".