2558261 has 4 divisors (see below), whose sum is σ = 2596512. Its totient is φ = 2520012.

The previous prime is 2558251. The next prime is 2558287. The reversal of 2558261 is 1628552.

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 2558261 - 2⁶ = 2558197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2558251) 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, 19025 + ... + 19158.

It is an arithmetic number, because the mean of its divisors is an integer number (649128).

2^2558261 is an apocalyptic number.

It is an amenable number.

2558261 is a deficient number, since it is larger than the sum of its proper divisors (38251).

2558261 is an equidigital number, since it uses as much as digits as its factorization.

2558261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38250.

The product of its digits is 4800, while the sum is 29.

The square root of 2558261 is about 1599.4564701798. The cubic root of 2558261 is about 136.7670932158.

The spelling of 2558261 in words is "two million, five hundred fifty-eight thousand, two hundred sixty-one".