43375121 has 2 divisors, whose sum is σ = 43375122. Its totient is φ = 43375120.

The previous prime is 43375103. The next prime is 43375139. The reversal of 43375121 is 12157334.

It is a balanced prime because it is at equal distance from previous prime (43375103) and next prime (43375139).

It can be written as a sum of positive squares in only one way, i.e., 39627025 + 3748096 = 6295^2 + 1936^2 .

It is a cyclic number.

It is not a de Polignac number, because 43375121 - 2¹⁸ = 43112977 is a prime.

It is a super-2 number, since 2×43375121² = 3762802243529282, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (43375141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21687560 + 21687561.

It is an arithmetic number, because the mean of its divisors is an integer number (21687561).

Almost surely, 2^43375121 is an apocalyptic number.

It is an amenable number.

43375121 is a deficient number, since it is larger than the sum of its proper divisors (1).

43375121 is an equidigital number, since it uses as much as digits as its factorization.

43375121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2520, while the sum is 26.

The square root of 43375121 is about 6585.9791223477. The cubic root of 43375121 is about 351.3556161332.

The spelling of 43375121 in words is "forty-three million, three hundred seventy-five thousand, one hundred twenty-one".