3581526 has 64 divisors (see below), whose sum is σ = 8503488. Its totient is φ = 995328.

The previous prime is 3581521. The next prime is 3581549. The reversal of 3581526 is 6251853.

It is a d-powerful number, because it can be written as 3¹³ + 5 + 8 + 1 + 5⁹ + 2¹⁵ + 6⁴ .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 3581493 and 3581502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3581521) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 49026 + ... + 49098.

It is an arithmetic number, because the mean of its divisors is an integer number (132867).

Almost surely, 2^3581526 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3581526, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4251744).

3581526 is an abundant number, since it is smaller than the sum of its proper divisors (4921962).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3581526 is a wasteful number, since it uses less digits than its factorization.

3581526 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145.

The product of its digits is 7200, while the sum is 30.

The square root of 3581526 is about 1892.4920079091. The cubic root of 3581526 is about 152.9992737801. Note that the first 3 decimals are identical.

The spelling of 3581526 in words is "three million, five hundred eighty-one thousand, five hundred twenty-six".