2523991 has 2 divisors, whose sum is σ = 2523992. Its totient is φ = 2523990.

The previous prime is 2523967. The next prime is 2524003. The reversal of 2523991 is 1993252.

2523991 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2523991 - 2⁵ = 2523959 is a prime.

It is a d-powerful number, because it can be written as 2⁴ + 5⁸ + 2¹⁰ + 3¹³ + 9⁴ + 9⁶ + 1 .

2523991 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2523901) 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, 1261995 + 1261996.

It is an arithmetic number, because the mean of its divisors is an integer number (1261996).

2^2523991 is an apocalyptic number.

2523991 is a deficient number, since it is larger than the sum of its proper divisors (1).

2523991 is an equidigital number, since it uses as much as digits as its factorization.

2523991 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4860, while the sum is 31.

The square root of 2523991 is about 1588.7073361699. The cubic root of 2523991 is about 136.1536434005.

The spelling of 2523991 in words is "two million, five hundred twenty-three thousand, nine hundred ninety-one".