3572521 has 4 divisors (see below), whose sum is σ = 3727872. Its totient is φ = 3417172.

The previous prime is 3572519. The next prime is 3572531. The reversal of 3572521 is 1252753.

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.

It is a cyclic number.

It is not a de Polignac number, because 3572521 - 2¹ = 3572519 is a prime.

It is a Duffinian number.

3572521 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (3572531) 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, 77641 + ... + 77686.

It is an arithmetic number, because the mean of its divisors is an integer number (931968).

Almost surely, 2^3572521 is an apocalyptic number.

It is an amenable number.

3572521 is a deficient number, since it is larger than the sum of its proper divisors (155351).

3572521 is a wasteful number, since it uses less digits than its factorization.

3572521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155350.

The product of its digits is 2100, while the sum is 25.

The square root of 3572521 is about 1890.1113723799. Note that the first 3 decimals coincide. The cubic root of 3572521 is about 152.8709379096.

The spelling of 3572521 in words is "three million, five hundred seventy-two thousand, five hundred twenty-one".