2523591 has 24 divisors (see below), whose sum is σ = 4271904. Its totient is φ = 1405440.

The previous prime is 2523589. The next prime is 2523593. The reversal of 2523591 is 1953252.

It is an interprime number because it is at equal distance from previous prime (2523589) and next prime (2523593).

It is not a de Polignac number, because 2523591 - 2¹ = 2523589 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2523593) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2095 + ... + 3071.

It is an arithmetic number, because the mean of its divisors is an integer number (177996).

2^2523591 is an apocalyptic number.

2523591 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

2523591 is a deficient number, since it is larger than the sum of its proper divisors (1748313).

2523591 is a wasteful number, since it uses less digits than its factorization.

2523591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1031 (or 1028 counting only the distinct ones).

The product of its digits is 2700, while the sum is 27.

The square root of 2523591 is about 1588.5814426714. The cubic root of 2523591 is about 136.1464505150.

The spelling of 2523591 in words is "two million, five hundred twenty-three thousand, five hundred ninety-one".