170880421 has 2 divisors, whose sum is σ = 170880422. Its totient is φ = 170880420.

The previous prime is 170880403. The next prime is 170880449. The reversal of 170880421 is 124088071.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 170015521 + 864900 = 13039^2 + 930^2 .

It is a cyclic number.

It is not a de Polignac number, because 170880421 - 2⁵ = 170880389 is a prime.

It is a super-2 number, since 2×170880421² = 58400236562274482, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (170880491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85440210 + 85440211.

It is an arithmetic number, because the mean of its divisors is an integer number (85440211).

Almost surely, 2^170880421 is an apocalyptic number.

It is an amenable number.

170880421 is a deficient number, since it is larger than the sum of its proper divisors (1).

170880421 is an equidigital number, since it uses as much as digits as its factorization.

170880421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3584, while the sum is 31.

The square root of 170880421 is about 13072.1238136731. The cubic root of 170880421 is about 554.9204993936.

The spelling of 170880421 in words is "one hundred seventy million, eight hundred eighty thousand, four hundred twenty-one".