3765121 has 4 divisors (see below), whose sum is σ = 3816772. Its totient is φ = 3713472.

The previous prime is 3765107. The next prime is 3765127. The reversal of 3765121 is 1215673.

3765121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 2062096 + 1703025 = 1436^2 + 1305^2 .

It is a cyclic number.

It is not a de Polignac number, because 3765121 - 2⁵ = 3765089 is a prime.

It is a super-2 number, since 2×3765121² = 28352272289282, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3765127) 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 3 ways as a sum of consecutive naturals, for example, 25716 + ... + 25861.

It is an arithmetic number, because the mean of its divisors is an integer number (954193).

Almost surely, 2^3765121 is an apocalyptic number.

It is an amenable number.

3765121 is a deficient number, since it is larger than the sum of its proper divisors (51651).

3765121 is an equidigital number, since it uses as much as digits as its factorization.

3765121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51650.

The product of its digits is 1260, while the sum is 25.

The square root of 3765121 is about 1940.3919707111. The cubic root of 3765121 is about 155.5701650867.

The spelling of 3765121 in words is "three million, seven hundred sixty-five thousand, one hundred twenty-one".