2561464 has 16 divisors (see below), whose sum is σ = 5011920. Its totient is φ = 1224960.

The previous prime is 2561431. The next prime is 2561491. The reversal of 2561464 is 4641652.

2561464 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×2561464² = 13122195646592, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6777 + ... + 7144.

It is an arithmetic number, because the mean of its divisors is an integer number (313245).

2^2561464 is an apocalyptic number.

It is an amenable number.

2561464 is a deficient number, since it is larger than the sum of its proper divisors (2450456).

2561464 is a wasteful number, since it uses less digits than its factorization.

2561464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13950 (or 13946 counting only the distinct ones).

The product of its digits is 5760, while the sum is 28.

The square root of 2561464 is about 1600.4574346105. The cubic root of 2561464 is about 136.8241478979.

It can be divided in two parts, 2561 and 464, that added together give a square (3025 = 55²).

The spelling of 2561464 in words is "two million, five hundred sixty-one thousand, four hundred sixty-four".