2523171 has 16 divisors (see below), whose sum is σ = 3919104. Its totient is φ = 1413984.

The previous prime is 2523163. The next prime is 2523173. The reversal of 2523171 is 1713252.

It is not a de Polignac number, because 2523171 - 2³ = 2523163 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

2523171 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2523173) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21 + ... + 2246.

It is an arithmetic number, because the mean of its divisors is an integer number (244944).

2^2523171 is an apocalyptic number.

2523171 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

2523171 is a deficient number, since it is larger than the sum of its proper divisors (1395933).

2523171 is a wasteful number, since it uses less digits than its factorization.

2523171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2330.

The product of its digits is 420, while the sum is 21.

The square root of 2523171 is about 1588.4492437595. The cubic root of 2523171 is about 136.1388971672.

The spelling of 2523171 in words is "two million, five hundred twenty-three thousand, one hundred seventy-one".