74985161 has 2 divisors, whose sum is σ = 74985162. Its totient is φ = 74985160.

The previous prime is 74985149. The next prime is 74985173. The reversal of 74985161 is 16158947.

It is a balanced prime because it is at equal distance from previous prime (74985149) and next prime (74985173).

It can be written as a sum of positive squares in only one way, i.e., 59969536 + 15015625 = 7744^2 + 3875^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74985161 is a prime.

It is not a weakly prime, because it can be changed into another prime (74985461) 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, 37492580 + 37492581.

It is an arithmetic number, because the mean of its divisors is an integer number (37492581).

Almost surely, 2^74985161 is an apocalyptic number.

It is an amenable number.

74985161 is a deficient number, since it is larger than the sum of its proper divisors (1).

74985161 is an equidigital number, since it uses as much as digits as its factorization.

74985161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 60480, while the sum is 41.

The square root of 74985161 is about 8659.3972653990. The cubic root of 74985161 is about 421.6885181557.

The spelling of 74985161 in words is "seventy-four million, nine hundred eighty-five thousand, one hundred sixty-one".