75576121 has 2 divisors, whose sum is σ = 75576122. Its totient is φ = 75576120.

The previous prime is 75576119. The next prime is 75576139. The reversal of 75576121 is 12167557.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 75064896 + 511225 = 8664^2 + 715^2 .

It is a cyclic number.

It is not a de Polignac number, because 75576121 - 2¹ = 75576119 is a prime.

Together with 75576119, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (75576181) 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 as a sum of consecutive naturals, namely, 37788060 + 37788061.

It is an arithmetic number, because the mean of its divisors is an integer number (37788061).

Almost surely, 2^75576121 is an apocalyptic number.

It is an amenable number.

75576121 is a deficient number, since it is larger than the sum of its proper divisors (1).

75576121 is an equidigital number, since it uses as much as digits as its factorization.

75576121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14700, while the sum is 34.

The square root of 75576121 is about 8693.4527663064. The cubic root of 75576121 is about 422.7934000701.

The spelling of 75576121 in words is "seventy-five million, five hundred seventy-six thousand, one hundred twenty-one".