75121201 has 2 divisors, whose sum is σ = 75121202. Its totient is φ = 75121200.

The previous prime is 75121199. The next prime is 75121213. The reversal of 75121201 is 10212157.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 69288976 + 5832225 = 8324^2 + 2415^2 .

It is a cyclic number.

It is not a de Polignac number, because 75121201 - 2¹ = 75121199 is a prime.

Together with 75121199, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (75121261) 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, 37560600 + 37560601.

It is an arithmetic number, because the mean of its divisors is an integer number (37560601).

Almost surely, 2^75121201 is an apocalyptic number.

It is an amenable number.

75121201 is a deficient number, since it is larger than the sum of its proper divisors (1).

75121201 is an equidigital number, since it uses as much as digits as its factorization.

75121201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 140, while the sum is 19.

The square root of 75121201 is about 8667.2487560933. The cubic root of 75121201 is about 421.9433767981.

Adding to 75121201 its reverse (10212157), we get a palindrome (85333358).

It can be divided in two parts, 751 and 21201, that added together give a cube (21952 = 28³).

The spelling of 75121201 in words is "seventy-five million, one hundred twenty-one thousand, two hundred one".