2540553 has 4 divisors (see below), whose sum is σ = 3387408. Its totient is φ = 1693700.

The previous prime is 2540539. The next prime is 2540563. The reversal of 2540553 is 3550452.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2540553 - 2⁴ = 2540537 is a prime.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (2540513) 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, 423423 + ... + 423428.

It is an arithmetic number, because the mean of its divisors is an integer number (846852).

2^2540553 is an apocalyptic number.

It is an amenable number.

2540553 is a deficient number, since it is larger than the sum of its proper divisors (846855).

2540553 is an equidigital number, since it uses as much as digits as its factorization.

2540553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 846854.

The product of its (nonzero) digits is 3000, while the sum is 24.

The square root of 2540553 is about 1593.9112271391. The cubic root of 2540553 is about 136.4508000710.

The spelling of 2540553 in words is "two million, five hundred forty thousand, five hundred fifty-three".