174241981 has 2 divisors, whose sum is σ = 174241982. Its totient is φ = 174241980.

The previous prime is 174241961. The next prime is 174242053. The reversal of 174241981 is 189142471.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 174108025 + 133956 = 13195^2 + 366^2 .

It is a cyclic number.

It is not a de Polignac number, because 174241981 - 2⁷ = 174241853 is a prime.

It is a super-2 number, since 2×174241981² = 60720535885608722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 174241981.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (174241961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 87120990 + 87120991.

It is an arithmetic number, because the mean of its divisors is an integer number (87120991).

Almost surely, 2^174241981 is an apocalyptic number.

It is an amenable number.

174241981 is a deficient number, since it is larger than the sum of its proper divisors (1).

174241981 is an equidigital number, since it uses as much as digits as its factorization.

174241981 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16128, while the sum is 37.

The square root of 174241981 is about 13200.0750376655. The cubic root of 174241981 is about 558.5356950492.

The spelling of 174241981 in words is "one hundred seventy-four million, two hundred forty-one thousand, nine hundred eighty-one".