75872161 has 2 divisors, whose sum is σ = 75872162. Its totient is φ = 75872160.

The previous prime is 75872143. The next prime is 75872179. The reversal of 75872161 is 16127857.

It is a balanced prime because it is at equal distance from previous prime (75872143) and next prime (75872179).

It can be written as a sum of positive squares in only one way, i.e., 58232161 + 17640000 = 7631^2 + 4200^2 .

It is a cyclic number.

It is not a de Polignac number, because 75872161 - 2²³ = 67483553 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 75872161.

It is not a weakly prime, because it can be changed into another prime (75872131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37936080 + 37936081.

It is an arithmetic number, because the mean of its divisors is an integer number (37936081).

Almost surely, 2^75872161 is an apocalyptic number.

It is an amenable number.

75872161 is a deficient number, since it is larger than the sum of its proper divisors (1).

75872161 is an equidigital number, since it uses as much as digits as its factorization.

75872161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23520, while the sum is 37.

The square root of 75872161 is about 8710.4627316808. The cubic root of 75872161 is about 423.3447236208.

The spelling of 75872161 in words is "seventy-five million, eight hundred seventy-two thousand, one hundred sixty-one".