3750215121 has 27 divisors (see below), whose sum is σ = 5493674641. Its totient is φ = 2465237184.

The previous prime is 3750215081. The next prime is 3750215123. The reversal of 3750215121 is 1215120573.

The square root of 3750215121 is 61239.

It is a perfect power (a square), and thus also a powerful number.

3750215121 is a `hidden beast` number, since 3 + 7 + 502 + 151 + 2 + 1 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 436601025 + 3313614096 = 20895^2 + 57564^2 .

It is not a de Polignac number, because 3750215121 - 2²¹ = 3748117969 is a prime.

It is a super-2 number, since 2×3750215121² = 28128226907554089282, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3750215123) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 25169155 + ... + 25169303.

Almost surely, 2^3750215121 is an apocalyptic number.

3750215121 is the 61239-th square number.

3750215121 is the 30620-th centered octagonal number.

It is an amenable number.

3750215121 is a deficient number, since it is larger than the sum of its proper divisors (1743459520).

3750215121 is an equidigital number, since it uses as much as digits as its factorization.

3750215121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 578 (or 289 counting only the distinct ones).

The product of its (nonzero) digits is 2100, while the sum is 27.

The cubic root of 3750215121 is about 1553.6459604517.

Adding to 3750215121 its reverse (1215120573), we get a palindrome (4965335694).

The spelling of 3750215121 in words is "three billion, seven hundred fifty million, two hundred fifteen thousand, one hundred twenty-one".