197787053 has 2 divisors, whose sum is σ = 197787054. Its totient is φ = 197787052.

The previous prime is 197787019. The next prime is 197787059. The reversal of 197787053 is 350787791.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 178409449 + 19377604 = 13357^2 + 4402^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-197787053 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 197786989 and 197787007.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (197787059) 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, 98893526 + 98893527.

It is an arithmetic number, because the mean of its divisors is an integer number (98893527).

Almost surely, 2^197787053 is an apocalyptic number.

It is an amenable number.

197787053 is a deficient number, since it is larger than the sum of its proper divisors (1).

197787053 is an equidigital number, since it uses as much as digits as its factorization.

197787053 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 370440, while the sum is 47.

The square root of 197787053 is about 14063.6785017292. The cubic root of 197787053 is about 582.6386444462.

The spelling of 197787053 in words is "one hundred ninety-seven million, seven hundred eighty-seven thousand, fifty-three".