100275779 has 2 divisors, whose sum is σ = 100275780. Its totient is φ = 100275778.

The previous prime is 100275767. The next prime is 100275797. The reversal of 100275779 is 977572001.

Together with next prime (100275797) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100275779 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (100275719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50137889 + 50137890.

It is an arithmetic number, because the mean of its divisors is an integer number (50137890).

Almost surely, 2^100275779 is an apocalyptic number.

100275779 is a deficient number, since it is larger than the sum of its proper divisors (1).

100275779 is an equidigital number, since it uses as much as digits as its factorization.

100275779 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30870, while the sum is 38.

The square root of 100275779 is about 10013.7794563292. The cubic root of 100275779 is about 464.5851759683.

The spelling of 100275779 in words is "one hundred million, two hundred seventy-five thousand, seven hundred seventy-nine".