99510601 has 2 divisors, whose sum is σ = 99510602. Its totient is φ = 99510600.

The previous prime is 99510599. The next prime is 99510637. The reversal of 99510601 is 10601599.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 90269001 + 9241600 = 9501^2 + 3040^2 .

It is a cyclic number.

It is not a de Polignac number, because 99510601 - 2¹ = 99510599 is a prime.

It is a super-2 number, since 2×99510601² = 19804719422762402, which contains 22 as substring.

Together with 99510599, it forms a pair of twin primes.

It is a Chen prime.

It is the 9976-th Hogben number.

It is not a weakly prime, because it can be changed into another prime (99510701) by changing a digit.

It is a nontrivial repunit in base 9975.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49755300 + 49755301.

It is an arithmetic number, because the mean of its divisors is an integer number (49755301).

Almost surely, 2^99510601 is an apocalyptic number.

It is an amenable number.

99510601 is a deficient number, since it is larger than the sum of its proper divisors (1).

99510601 is an equidigital number, since it uses as much as digits as its factorization.

99510601 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2430, while the sum is 31.

The square root of 99510601 is about 9975.5000375921. The cubic root of 99510601 is about 463.4004484436.

The spelling of 99510601 in words is "ninety-nine million, five hundred ten thousand, six hundred one".