174985457 has 2 divisors, whose sum is σ = 174985458. Its totient is φ = 174985456.

The previous prime is 174985427. The next prime is 174985493. The reversal of 174985457 is 754589471.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 137334961 + 37650496 = 11719^2 + 6136^2 .

It is an emirp because it is prime and its reverse (754589471) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-174985457 is a prime.

It is a super-2 number, since 2×174985457² = 61239820322997698, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (174985427) 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, 87492728 + 87492729.

It is an arithmetic number, because the mean of its divisors is an integer number (87492729).

Almost surely, 2^174985457 is an apocalyptic number.

It is an amenable number.

174985457 is a deficient number, since it is larger than the sum of its proper divisors (1).

174985457 is an equidigital number, since it uses as much as digits as its factorization.

174985457 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1411200, while the sum is 50.

The square root of 174985457 is about 13228.2068701695. The cubic root of 174985457 is about 559.3289762369.

The spelling of 174985457 in words is "one hundred seventy-four million, nine hundred eighty-five thousand, four hundred fifty-seven".