2561488 has 10 divisors (see below), whose sum is σ = 4962914. Its totient is φ = 1280736.

The previous prime is 2561431. The next prime is 2561491. The reversal of 2561488 is 8841652.

It can be written as a sum of positive squares in only one way, i.e., 1420864 + 1140624 = 1192^2 + 1068^2 .

It is a super-2 number, since 2×2561488² = 13122441548288, 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 as a sum of consecutive naturals, namely, 80031 + ... + 80062.

2^2561488 is an apocalyptic number.

It is an amenable number.

2561488 is a deficient number, since it is larger than the sum of its proper divisors (2401426).

2561488 is a wasteful number, since it uses less digits than its factorization.

2561488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160101 (or 160095 counting only the distinct ones).

The product of its digits is 15360, while the sum is 34.

The square root of 2561488 is about 1600.4649324493. The cubic root of 2561488 is about 136.8245752277.

The spelling of 2561488 in words is "two million, five hundred sixty-one thousand, four hundred eighty-eight".