3750321 has 4 divisors (see below), whose sum is σ = 5000432. Its totient is φ = 2500212.

The previous prime is 3750317. The next prime is 3750323. The reversal of 3750321 is 1230573.

It is a happy number.

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 not a de Polignac number, because 3750321 - 2² = 3750317 is a prime.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3750323) 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, 625051 + ... + 625056.

It is an arithmetic number, because the mean of its divisors is an integer number (1250108).

Almost surely, 2^3750321 is an apocalyptic number.

It is an amenable number.

3750321 is a deficient number, since it is larger than the sum of its proper divisors (1250111).

3750321 is a wasteful number, since it uses less digits than its factorization.

3750321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1250110.

The product of its (nonzero) digits is 630, while the sum is 21.

The square root of 3750321 is about 1936.5745531737. The cubic root of 3750321 is about 155.3660581563.

Subtracting from 3750321 its product of nonzero digits (630), we obtain a triangular number (3749691 = T₂₇₃₈).

Adding to 3750321 its reverse (1230573), we get a palindrome (4980894).

The spelling of 3750321 in words is "three million, seven hundred fifty thousand, three hundred twenty-one".