3732561 has 40 divisors (see below), whose sum is σ = 6621120. Its totient is φ = 2050272.

The previous prime is 3732551. The next prime is 3732577. The reversal of 3732561 is 1652373.

It is a happy number.

3732561 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3732561 - 2⁷ = 3732433 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3732511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 16330 + ... + 16556.

It is an arithmetic number, because the mean of its divisors is an integer number (165528).

Almost surely, 2^3732561 is an apocalyptic number.

It is an amenable number.

3732561 is a deficient number, since it is larger than the sum of its proper divisors (2888559).

3732561 is a wasteful number, since it uses less digits than its factorization.

3732561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275 (or 266 counting only the distinct ones).

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

The square root of 3732561 is about 1931.9836955834. The cubic root of 3732561 is about 155.1204197756.

The spelling of 3732561 in words is "three million, seven hundred thirty-two thousand, five hundred sixty-one".