2561910 has 32 divisors (see below), whose sum is σ = 6622560. Its totient is φ = 630528.

The previous prime is 2561899. The next prime is 2561921. The reversal of 2561910 is 191652.

It is an interprime number because it is at equal distance from previous prime (2561899) and next prime (2561921).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2895 + ... + 3674.

It is an arithmetic number, because the mean of its divisors is an integer number (206955).

2^2561910 is an apocalyptic number.

2561910 is an abundant number, since it is smaller than the sum of its proper divisors (4060650).

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

2561910 is a wasteful number, since it uses less digits than its factorization.

2561910 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6592.

The product of its (nonzero) digits is 540, while the sum is 24.

The square root of 2561910 is about 1600.5967637103. The cubic root of 2561910 is about 136.8320886730.

The spelling of 2561910 in words is "two million, five hundred sixty-one thousand, nine hundred ten".