3532981 has 4 divisors (see below), whose sum is σ = 3581452. Its totient is φ = 3484512.

The previous prime is 3532973. The next prime is 3532999. The reversal of 3532981 is 1892353.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2430481 + 1102500 = 1559^2 + 1050^2 .

It is a cyclic number.

It is not a de Polignac number, because 3532981 - 2³ = 3532973 is a prime.

It is a super-2 number, since 2×3532981² = 24963909492722, which contains 22 as substring.

It is a Duffinian number.

3532981 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3532931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24126 + ... + 24271.

It is an arithmetic number, because the mean of its divisors is an integer number (895363).

Almost surely, 2^3532981 is an apocalyptic number.

It is an amenable number.

3532981 is a deficient number, since it is larger than the sum of its proper divisors (48471).

3532981 is an equidigital number, since it uses as much as digits as its factorization.

3532981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48470.

The product of its digits is 6480, while the sum is 31.

The square root of 3532981 is about 1879.6225684961. The cubic root of 3532981 is about 152.3048619382.

The spelling of 3532981 in words is "three million, five hundred thirty-two thousand, nine hundred eighty-one".