3752107221 has 4 divisors (see below), whose sum is σ = 5002809632. Its totient is φ = 2501404812.

The previous prime is 3752107207. The next prime is 3752107253. The reversal of 3752107221 is 1227012573.

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 3752107221 - 2⁵ = 3752107189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3752107321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 625351201 + ... + 625351206.

It is an arithmetic number, because the mean of its divisors is an integer number (1250702408).

Almost surely, 2^3752107221 is an apocalyptic number.

It is an amenable number.

3752107221 is a deficient number, since it is larger than the sum of its proper divisors (1250702411).

3752107221 is a wasteful number, since it uses less digits than its factorization.

3752107221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1250702410.

The product of its (nonzero) digits is 5880, while the sum is 30.

The square root of 3752107221 is about 61254.4465406390. The cubic root of 3752107221 is about 1553.9072040678.

Adding to 3752107221 its reverse (1227012573), we get a palindrome (4979119794).

The spelling of 3752107221 in words is "three billion, seven hundred fifty-two million, one hundred seven thousand, two hundred twenty-one".