100539997 has 2 divisors, whose sum is σ = 100539998. Its totient is φ = 100539996.

The previous prime is 100539961. The next prime is 100540009. The reversal of 100539997 is 799935001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 100520676 + 19321 = 10026^2 + 139^2 .

It is an emirp because it is prime and its reverse (799935001) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 100539997 - 2⁷ = 100539869 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100539947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50269998 + 50269999.

It is an arithmetic number, because the mean of its divisors is an integer number (50269999).

Almost surely, 2^100539997 is an apocalyptic number.

It is an amenable number.

100539997 is a deficient number, since it is larger than the sum of its proper divisors (1).

100539997 is an equidigital number, since it uses as much as digits as its factorization.

100539997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 76545, while the sum is 43.

The square root of 100539997 is about 10026.9634984875. The cubic root of 100539997 is about 464.9928653470.

The spelling of 100539997 in words is "one hundred million, five hundred thirty-nine thousand, nine hundred ninety-seven".