172098481 has 2 divisors, whose sum is σ = 172098482. Its totient is φ = 172098480.

The previous prime is 172098439. The next prime is 172098517. The reversal of 172098481 is 184890271.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 147258225 + 24840256 = 12135^2 + 4984^2 .

It is a cyclic number.

It is not a de Polignac number, because 172098481 - 2²¹ = 170001329 is a prime.

It is a super-2 number, since 2×172098481² = 59235774325014722, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (172098281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86049240 + 86049241.

It is an arithmetic number, because the mean of its divisors is an integer number (86049241).

Almost surely, 2^172098481 is an apocalyptic number.

It is an amenable number.

172098481 is a deficient number, since it is larger than the sum of its proper divisors (1).

172098481 is an equidigital number, since it uses as much as digits as its factorization.

172098481 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32256, while the sum is 40.

The square root of 172098481 is about 13118.6310642536. The cubic root of 172098481 is about 556.2358963558.

The spelling of 172098481 in words is "one hundred seventy-two million, ninety-eight thousand, four hundred eighty-one".