75120961 has 2 divisors, whose sum is σ = 75120962. Its totient is φ = 75120960.

The previous prime is 75120901. The next prime is 75121001. The reversal of 75120961 is 16902157.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 47872561 + 27248400 = 6919^2 + 5220^2 .

It is a cyclic number.

It is not a de Polignac number, because 75120961 - 2¹⁹ = 74596673 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (75120901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37560480 + 37560481.

It is an arithmetic number, because the mean of its divisors is an integer number (37560481).

Almost surely, 2^75120961 is an apocalyptic number.

It is an amenable number.

75120961 is a deficient number, since it is larger than the sum of its proper divisors (1).

75120961 is an equidigital number, since it uses as much as digits as its factorization.

75120961 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3780, while the sum is 31.

The square root of 75120961 is about 8667.2349108582. The cubic root of 75120961 is about 421.9429274509.

It can be divided in two parts, 751 and 20961, that added together give a palindrome (21712).

The spelling of 75120961 in words is "seventy-five million, one hundred twenty thousand, nine hundred sixty-one".