70032161 has 2 divisors, whose sum is σ = 70032162. Its totient is φ = 70032160.

The previous prime is 70032113. The next prime is 70032181. The reversal of 70032161 is 16123007.

It is a happy number.

It is an a-pointer prime, because the next prime (70032181) can be obtained adding 70032161 to its sum of digits (20).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 50140561 + 19891600 = 7081^2 + 4460^2 .

It is a cyclic number.

It is not a de Polignac number, because 70032161 - 2⁶ = 70032097 is a prime.

It is not a weakly prime, because it can be changed into another prime (70032101) 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, 35016080 + 35016081.

It is an arithmetic number, because the mean of its divisors is an integer number (35016081).

Almost surely, 2^70032161 is an apocalyptic number.

It is an amenable number.

70032161 is a deficient number, since it is larger than the sum of its proper divisors (1).

70032161 is an equidigital number, since it uses as much as digits as its factorization.

70032161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 252, while the sum is 20.

The square root of 70032161 is about 8368.5220319959. The cubic root of 70032161 is about 412.1916368203.

Adding to 70032161 its reverse (16123007), we get a palindrome (86155168).

The spelling of 70032161 in words is "seventy million, thirty-two thousand, one hundred sixty-one".