2557535 has 4 divisors (see below), whose sum is σ = 3069048. Its totient is φ = 2046024.

The previous prime is 2557519. The next prime is 2557553. The reversal of 2557535 is 5357552.

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

It is a cyclic number.

It is not a de Polignac number, because 2557535 - 2⁴ = 2557519 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 255749 + ... + 255758.

It is an arithmetic number, because the mean of its divisors is an integer number (767262).

2^2557535 is an apocalyptic number.

2557535 is a deficient number, since it is larger than the sum of its proper divisors (511513).

2557535 is an equidigital number, since it uses as much as digits as its factorization.

2557535 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 511512.

The product of its digits is 26250, while the sum is 32.

The square root of 2557535 is about 1599.2295019790. The cubic root of 2557535 is about 136.7541544391.

The spelling of 2557535 in words is "two million, five hundred fifty-seven thousand, five hundred thirty-five".