2086521 has 12 divisors (see below), whose sum is σ = 2884752. Its totient is φ = 1341424.

The previous prime is 2086519. The next prime is 2086543. The reversal of 2086521 is 1256802.

It is not a de Polignac number, because 2086521 - 2¹ = 2086519 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2086491 and 2086500.

It is not an unprimeable number, because it can be changed into a prime (2086501) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2110 + ... + 2936.

It is an arithmetic number, because the mean of its divisors is an integer number (240396).

2^2086521 is an apocalyptic number.

It is an amenable number.

2086521 is a deficient number, since it is larger than the sum of its proper divisors (798231).

2086521 is an equidigital number, since it uses as much as digits as its factorization.

2086521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 888 (or 859 counting only the distinct ones).

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

The square root of 2086521 is about 1444.4794910278. The cubic root of 2086521 is about 127.7833452451.

The spelling of 2086521 in words is "two million, eighty-six thousand, five hundred twenty-one".