3237561 has 12 divisors (see below), whose sum is σ = 4692480. Its totient is φ = 2151000.

The previous prime is 3237557. The next prime is 3237583. The reversal of 3237561 is 1657323.

It is a happy number.

It is not a de Polignac number, because 3237561 - 2² = 3237557 is a prime.

It is an Ulam number.

It is a d-powerful number, because it can be written as 3¹² + 2¹³ + 3¹³ + 7⁷ + 5³ + 6⁷ + 1 .

It is not an unprimeable number, because it can be changed into a prime (3237551) 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, 3936 + ... + 4686.

It is an arithmetic number, because the mean of its divisors is an integer number (391040).

Almost surely, 2^3237561 is an apocalyptic number.

It is an amenable number.

3237561 is a deficient number, since it is larger than the sum of its proper divisors (1454919).

3237561 is a wasteful number, since it uses less digits than its factorization.

3237561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1236 (or 1233 counting only the distinct ones).

The product of its digits is 3780, while the sum is 27.

The square root of 3237561 is about 1799.3223724503. The cubic root of 3237561 is about 147.9355849461.

The spelling of 3237561 in words is "three million, two hundred thirty-seven thousand, five hundred sixty-one".