2581413 has 8 divisors (see below), whose sum is σ = 3449376. Its totient is φ = 1717200.

The previous prime is 2581409. The next prime is 2581417. The reversal of 2581413 is 3141852.

It is an interprime number because it is at equal distance from previous prime (2581409) and next prime (2581417).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2581413 - 2² = 2581409 is a prime.

It is an Ulam number.

It is a Curzon number.

2581413 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2581417) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1903 + ... + 2963.

It is an arithmetic number, because the mean of its divisors is an integer number (431172).

2^2581413 is an apocalyptic number.

It is an amenable number.

2581413 is a deficient number, since it is larger than the sum of its proper divisors (867963).

2581413 is a wasteful number, since it uses less digits than its factorization.

2581413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1875.

The product of its digits is 960, while the sum is 24.

The square root of 2581413 is about 1606.6776279018. The cubic root of 2581413 is about 137.1784309068.

The spelling of 2581413 in words is "two million, five hundred eighty-one thousand, four hundred thirteen".