3651091 has 4 divisors (see below), whose sum is σ = 3740184. Its totient is φ = 3562000.

The previous prime is 3651083. The next prime is 3651119. The reversal of 3651091 is 1901563.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3651091 - 2³ = 3651083 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3651191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44485 + ... + 44566.

It is an arithmetic number, because the mean of its divisors is an integer number (935046).

Almost surely, 2^3651091 is an apocalyptic number.

3651091 is a deficient number, since it is larger than the sum of its proper divisors (89093).

3651091 is an equidigital number, since it uses as much as digits as its factorization.

3651091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89092.

The product of its (nonzero) digits is 810, while the sum is 25.

The square root of 3651091 is about 1910.7828238709. The cubic root of 3651091 is about 153.9835114747.

The spelling of 3651091 in words is "three million, six hundred fifty-one thousand, ninety-one".