2561485 has 16 divisors (see below), whose sum is σ = 3297600. Its totient is φ = 1904256.

The previous prime is 2561431. The next prime is 2561491. The reversal of 2561485 is 5841652.

It is not a de Polignac number, because 2561485 - 2⁹ = 2560973 is a prime.

It is a super-2 number, since 2×2561485² = 13122410810450, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5377 + ... + 5833.

It is an arithmetic number, because the mean of its divisors is an integer number (206100).

2^2561485 is an apocalyptic number.

It is an amenable number.

2561485 is a deficient number, since it is larger than the sum of its proper divisors (736115).

2561485 is a wasteful number, since it uses less digits than its factorization.

2561485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 540.

The product of its digits is 9600, while the sum is 31.

The square root of 2561485 is about 1600.4639952214. The cubic root of 2561485 is about 136.8245218116.

The spelling of 2561485 in words is "two million, five hundred sixty-one thousand, four hundred eighty-five".