2208531 has 8 divisors (see below), whose sum is σ = 3171280. Its totient is φ = 1359072.

The previous prime is 2208517. The next prime is 2208559. The reversal of 2208531 is 1358022.

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

It is not a de Polignac number, because 2208531 - 2⁶ = 2208467 is a prime.

It is a super-2 number, since 2×2208531² = 9755218355922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2208498 and 2208507.

It is not an unprimeable number, because it can be changed into a prime (2208581) 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, 28276 + ... + 28353.

It is an arithmetic number, because the mean of its divisors is an integer number (396410).

2^2208531 is an apocalyptic number.

2208531 is a deficient number, since it is larger than the sum of its proper divisors (962749).

2208531 is a wasteful number, since it uses less digits than its factorization.

2208531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56645.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 2208531 is about 1486.1127144332. The cubic root of 2208531 is about 130.2270391529.

The spelling of 2208531 in words is "two million, two hundred eight thousand, five hundred thirty-one".