3735581 has 4 divisors (see below), whose sum is σ = 3780672. Its totient is φ = 3690492.

The previous prime is 3735569. The next prime is 3735583. The reversal of 3735581 is 1855373.

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 3735581 - 2⁶ = 3735517 is a prime.

It is a super-2 number, since 2×3735581² = 27909130815122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3735583) 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, 22421 + ... + 22586.

It is an arithmetic number, because the mean of its divisors is an integer number (945168).

Almost surely, 2^3735581 is an apocalyptic number.

It is an amenable number.

3735581 is a deficient number, since it is larger than the sum of its proper divisors (45091).

3735581 is an equidigital number, since it uses as much as digits as its factorization.

3735581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45090.

The product of its digits is 12600, while the sum is 32.

The square root of 3735581 is about 1932.7651176488. The cubic root of 3735581 is about 155.1622442656.

The spelling of 3735581 in words is "three million, seven hundred thirty-five thousand, five hundred eighty-one".