99905101 has 2 divisors, whose sum is σ = 99905102. Its totient is φ = 99905100.

The previous prime is 99905093. The next prime is 99905111. The reversal of 99905101 is 10150999.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 88849476 + 11055625 = 9426^2 + 3325^2 .

It is a cyclic number.

It is not a de Polignac number, because 99905101 - 2³ = 99905093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99905111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49952550 + 49952551.

It is an arithmetic number, because the mean of its divisors is an integer number (49952551).

Almost surely, 2^99905101 is an apocalyptic number.

It is an amenable number.

99905101 is a deficient number, since it is larger than the sum of its proper divisors (1).

99905101 is an equidigital number, since it uses as much as digits as its factorization.

99905101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3645, while the sum is 34.

The square root of 99905101 is about 9995.2539237380. The cubic root of 99905101 is about 464.0120095113.

The spelling of 99905101 in words is "ninety-nine million, nine hundred five thousand, one hundred one".