997272061 has 2 divisors, whose sum is σ = 997272062. Its totient is φ = 997272060.

The previous prime is 997272013. The next prime is 997272083. The reversal of 997272061 is 160272799.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 992628036 + 4644025 = 31506^2 + 2155^2 .

It is an emirp because it is prime and its reverse (160272799) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 997272061 - 2⁹ = 997271549 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 997271999 and 997272017.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (997272161) 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 as a sum of consecutive naturals, namely, 498636030 + 498636031.

It is an arithmetic number, because the mean of its divisors is an integer number (498636031).

Almost surely, 2^997272061 is an apocalyptic number.

It is an amenable number.

997272061 is a deficient number, since it is larger than the sum of its proper divisors (1).

997272061 is an equidigital number, since it uses as much as digits as its factorization.

997272061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 95256, while the sum is 43.

The square root of 997272061 is about 31579.6146429940. The cubic root of 997272061 is about 999.0898588945.

The spelling of 997272061 in words is "nine hundred ninety-seven million, two hundred seventy-two thousand, sixty-one".