2561472 has 42 divisors (see below), whose sum is σ = 7343648. Its totient is φ = 853632.

The previous prime is 2561431. The next prime is 2561491. The reversal of 2561472 is 2741652.

It is a super-2 number, since 2×2561472² = 13122277613568, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1648 + ... + 2799.

2^2561472 is an apocalyptic number.

It is an amenable number.

2561472 is an abundant number, since it is smaller than the sum of its proper divisors (4782176).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2561472 is a wasteful number, since it uses less digits than its factorization.

2561472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4465 (or 4452 counting only the distinct ones).

The product of its digits is 3360, while the sum is 27.

The square root of 2561472 is about 1600.4599338940. The cubic root of 2561472 is about 136.8242903415.

It can be divided in two parts, 256 and 1472, that added together give a cube (1728 = 12³).

The spelling of 2561472 in words is "two million, five hundred sixty-one thousand, four hundred seventy-two".