497545426161 has 27 divisors (see below), whose sum is σ = 836036592651. Its totient is φ = 284303207664.

The previous prime is 497545426141. The next prime is 497545426171. The reversal of 497545426161 is 161624545794.

The square root of 497545426161 is 705369.

It is a perfect power (a square), and thus also a powerful number.

497545426161 is a `hidden beast` number, since 4 + 9 + 7 + 5 + 454 + 26 + 161 = 666.

It can be written as a sum of positive squares in only one way, i.e., 491637966561 + 5907459600 = 701169^2 + 76860^2 .

It is not a de Polignac number, because 497545426161 - 2³³ = 488955491569 is a prime.

It is a super-2 number, since 2×497545426161² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 497545426098 and 497545426107.

It is not an unprimeable number, because it can be changed into a prime (497545426111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 14795955 + ... + 14829543.

Almost surely, 2^497545426161 is an apocalyptic number.

497545426161 is the 705369-th square number.

497545426161 is the 352685-th centered octagonal number.

It is an amenable number.

497545426161 is a deficient number, since it is larger than the sum of its proper divisors (338491166490).

497545426161 is an frugal number, since it uses more digits than its factorization.

497545426161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67198 (or 33599 counting only the distinct ones).

The product of its digits is 7257600, while the sum is 54.

The spelling of 497545426161 in words is "four hundred ninety-seven billion, five hundred forty-five million, four hundred twenty-six thousand, one hundred sixty-one".