171554886452 has 12 divisors (see below), whose sum is σ = 300224944740. Its totient is φ = 85776330816.

The previous prime is 171554886421. The next prime is 171554886457. The reversal of 171554886452 is 254688455171.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 68646096016 + 102908790436 = 262004^2 + 320794^2 .

It is a super-2 number, since 2×171554886452² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (171554886457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 138098 + ... + 601814.

It is an arithmetic number, because the mean of its divisors is an integer number (25018745395).

Almost surely, 2^171554886452 is an apocalyptic number.

It is an amenable number.

171554886452 is a deficient number, since it is larger than the sum of its proper divisors (128670058288).

171554886452 is a wasteful number, since it uses less digits than its factorization.

171554886452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 556210 (or 556208 counting only the distinct ones).

The product of its digits is 10752000, while the sum is 56.

The spelling of 171554886452 in words is "one hundred seventy-one billion, five hundred fifty-four million, eight hundred eighty-six thousand, four hundred fifty-two".