2561475 has 72 divisors (see below), whose sum is σ = 5343408. Its totient is φ = 1075200.

The previous prime is 2561431. The next prime is 2561491. The reversal of 2561475 is 5741652.

2561475 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2561475 - 2⁶ = 2561411 is a prime.

It is a super-2 number, since 2×2561475² = 13122308351250, which contains 22 as substring.

It is an Ulam 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 71 ways as a sum of consecutive naturals, for example, 62455 + ... + 62495.

It is an arithmetic number, because the mean of its divisors is an integer number (74214).

2^2561475 is an apocalyptic number.

2561475 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

2561475 is an abundant number, since it is smaller than the sum of its proper divisors (2781933).

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

2561475 is a wasteful number, since it uses less digits than its factorization.

2561475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85 (or 73 counting only the distinct ones).

The product of its digits is 8400, while the sum is 30.

The square root of 2561475 is about 1600.4608711243. The cubic root of 2561475 is about 136.8243437577.

The spelling of 2561475 in words is "two million, five hundred sixty-one thousand, four hundred seventy-five".