2540173 has 2 divisors, whose sum is σ = 2540174.
Its totient is φ = 2540172.
The previous prime is 2540141. The next prime is 2540177. The reversal of 2540173 is 3710452.
It is a strong prime.
It can be written as a sum of positive squares in only one way, i.e., 2377764 + 162409 = 1542^2 + 403^2
It is a cyclic number.
It is not a de Polignac number, because 2540173 - 25 = 2540141 is a prime.
It is an Ulam number.
It is equal to p185800 and since 2540173 and 185800 have the same sum of digits, it is a Honaker prime.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (2540177) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1270086 + 1270087.
It is an arithmetic number, because the mean of its divisors is an integer number (1270087).
22540173 is an apocalyptic number.
It is an amenable number.
2540173 is a deficient number, since it is larger than the sum of its proper divisors (1).
2540173 is an equidigital number, since it uses as much as digits as its factorization.
2540173 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 840, while the sum is 22.
The square root of 2540173 is about 1593.7920190539.
The cubic root of 2540173 is about 136.4439965799.
The spelling of 2540173 in words is "two million, five hundred forty thousand, one hundred seventy-three".