162780097 has 2 divisors, whose sum is σ = 162780098. Its totient is φ = 162780096.

The previous prime is 162780043. The next prime is 162780133. The reversal of 162780097 is 790087261.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 90801841 + 71978256 = 9529^2 + 8484^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-162780097 is a prime.

It is not a weakly prime, because it can be changed into another prime (162780997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81390048 + 81390049.

It is an arithmetic number, because the mean of its divisors is an integer number (81390049).

Almost surely, 2^162780097 is an apocalyptic number.

It is an amenable number.

162780097 is a deficient number, since it is larger than the sum of its proper divisors (1).

162780097 is an equidigital number, since it uses as much as digits as its factorization.

162780097 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 42336, while the sum is 40.

The square root of 162780097 is about 12758.5303620754. The cubic root of 162780097 is about 546.0097957873.

The spelling of 162780097 in words is "one hundred sixty-two million, seven hundred eighty thousand, ninety-seven".