2540089 has 4 divisors (see below), whose sum is σ = 2689524. Its totient is φ = 2390656.

The previous prime is 2540071. The next prime is 2540093. The reversal of 2540089 is 9800452.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2073600 + 466489 = 1440^2 + 683^2 .

It is a cyclic number.

It is not a de Polignac number, because 2540089 - 2⁷ = 2539961 is a prime.

It is a Duffinian number.

2540089 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2540099) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74692 + ... + 74725.

It is an arithmetic number, because the mean of its divisors is an integer number (672381).

2^2540089 is an apocalyptic number.

It is an amenable number.

2540089 is a deficient number, since it is larger than the sum of its proper divisors (149435).

2540089 is a wasteful number, since it uses less digits than its factorization.

2540089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149434.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 2540089 is about 1593.7656665897. The cubic root of 2540089 is about 136.4424925587.

The spelling of 2540089 in words is "two million, five hundred forty thousand, eighty-nine".