2581935 has 16 divisors (see below), whose sum is σ = 4228224. Its totient is φ = 1344672.

The previous prime is 2581933. The next prime is 2581939. The reversal of 2581935 is 5391852.

It is not a de Polignac number, because 2581935 - 2¹ = 2581933 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2581896 and 2581905.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2581933) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1357 + ... + 2646.

It is an arithmetic number, because the mean of its divisors is an integer number (264264).

2^2581935 is an apocalyptic number.

2581935 is a deficient number, since it is larger than the sum of its proper divisors (1646289).

2581935 is a wasteful number, since it uses less digits than its factorization.

2581935 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4054.

The product of its digits is 10800, while the sum is 33.

The square root of 2581935 is about 1606.8400667148. The cubic root of 2581935 is about 137.1876767882.

The spelling of 2581935 in words is "two million, five hundred eighty-one thousand, nine hundred thirty-five".