97780127 has 2 divisors, whose sum is σ = 97780128. Its totient is φ = 97780126.

The previous prime is 97780097. The next prime is 97780147. The reversal of 97780127 is 72108779.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 97780127 - 2¹⁰ = 97779103 is a prime.

It is a super-2 number, since 2×97780127² = 19121906472272258, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (97780147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48890063 + 48890064.

It is an arithmetic number, because the mean of its divisors is an integer number (48890064).

Almost surely, 2^97780127 is an apocalyptic number.

97780127 is a deficient number, since it is larger than the sum of its proper divisors (1).

97780127 is an equidigital number, since it uses as much as digits as its factorization.

97780127 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 49392, while the sum is 41.

The square root of 97780127 is about 9888.3834371448. The cubic root of 97780127 is about 460.6985715439.

The spelling of 97780127 in words is "ninety-seven million, seven hundred eighty thousand, one hundred twenty-seven".