3523549 has 4 divisors (see below), whose sum is σ = 3605536. Its totient is φ = 3441564.

The previous prime is 3523519. The next prime is 3523561. The reversal of 3523549 is 9453253.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9453253 = 23 ⋅411011.

It is a cyclic number.

It is not a de Polignac number, because 3523549 - 2¹⁹ = 2999261 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3523549.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3523519) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40929 + ... + 41014.

It is an arithmetic number, because the mean of its divisors is an integer number (901384).

Almost surely, 2^3523549 is an apocalyptic number.

It is an amenable number.

3523549 is a deficient number, since it is larger than the sum of its proper divisors (81987).

3523549 is an equidigital number, since it uses as much as digits as its factorization.

3523549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81986.

The product of its digits is 16200, while the sum is 31.

The square root of 3523549 is about 1877.1118773264. Note that the first 3 decimals coincide. The cubic root of 3523549 is about 152.1692050398.

The spelling of 3523549 in words is "three million, five hundred twenty-three thousand, five hundred forty-nine".