107161721 has 2 divisors, whose sum is σ = 107161722. Its totient is φ = 107161720.

The previous prime is 107161687. The next prime is 107161753. The reversal of 107161721 is 127161701.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 84732025 + 22429696 = 9205^2 + 4736^2 .

It is a cyclic number.

It is not a de Polignac number, because 107161721 - 2¹⁸ = 106899577 is a prime.

It is a super-2 number, since 2×107161721² = 22967268895363682, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (107161771) 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, 53580860 + 53580861.

It is an arithmetic number, because the mean of its divisors is an integer number (53580861).

Almost surely, 2^107161721 is an apocalyptic number.

It is an amenable number.

107161721 is a deficient number, since it is larger than the sum of its proper divisors (1).

107161721 is an equidigital number, since it uses as much as digits as its factorization.

107161721 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 588, while the sum is 26.

The square root of 107161721 is about 10351.8945609004. The cubic root of 107161721 is about 474.9849982335.

The spelling of 107161721 in words is "one hundred seven million, one hundred sixty-one thousand, seven hundred twenty-one".