75331261 has 2 divisors, whose sum is σ = 75331262. Its totient is φ = 75331260.

The previous prime is 75331253. The next prime is 75331273. The reversal of 75331261 is 16213357.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 46376100 + 28955161 = 6810^2 + 5381^2 .

It is a cyclic number.

It is not a de Polignac number, because 75331261 - 2³ = 75331253 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (75331211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37665630 + 37665631.

It is an arithmetic number, because the mean of its divisors is an integer number (37665631).

Almost surely, 2^75331261 is an apocalyptic number.

It is an amenable number.

75331261 is a deficient number, since it is larger than the sum of its proper divisors (1).

75331261 is an equidigital number, since it uses as much as digits as its factorization.

75331261 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3780, while the sum is 28.

The square root of 75331261 is about 8679.3583288167. The cubic root of 75331261 is about 422.3363015561.

The spelling of 75331261 in words is "seventy-five million, three hundred thirty-one thousand, two hundred sixty-one".