2561602 has 16 divisors (see below), whose sum is σ = 4043520. Its totient is φ = 1214752.

The previous prime is 2561593. The next prime is 2561627. The reversal of 2561602 is 2061652.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10599 + ... + 10837.

It is an arithmetic number, because the mean of its divisors is an integer number (252720).

2^2561602 is an apocalyptic number.

2561602 is a deficient number, since it is larger than the sum of its proper divisors (1481918).

2561602 is a wasteful number, since it uses less digits than its factorization.

2561602 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 497.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 2561602 is about 1600.5005467041. The cubic root of 2561602 is about 136.8266050075.

The spelling of 2561602 in words is "two million, five hundred sixty-one thousand, six hundred two".