2251613 has 16 divisors (see below), whose sum is σ = 2808960. Its totient is φ = 1757376.

The previous prime is 2251603. The next prime is 2251637. The reversal of 2251613 is 3161522.

It is a cyclic number.

It is not a de Polignac number, because 2251613 - 2¹⁴ = 2235229 is a prime.

It is a super-2 number, since 2×2251613² = 10139522203538, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2251603) 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, 9806 + ... + 10032.

It is an arithmetic number, because the mean of its divisors is an integer number (175560).

2^2251613 is an apocalyptic number.

It is an amenable number.

2251613 is a deficient number, since it is larger than the sum of its proper divisors (557347).

2251613 is a wasteful number, since it uses less digits than its factorization.

2251613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 356.

The product of its digits is 360, while the sum is 20.

The square root of 2251613 is about 1500.5375703394. The cubic root of 2251613 is about 131.0683752372.

Subtracting 2251613 from its reverse (3161522), we obtain a palindrome (909909).

The spelling of 2251613 in words is "two million, two hundred fifty-one thousand, six hundred thirteen".