99757081 has 2 divisors, whose sum is σ = 99757082. Its totient is φ = 99757080.

The previous prime is 99757079. The next prime is 99757109. The reversal of 99757081 is 18075799.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 71571600 + 28185481 = 8460^2 + 5309^2 .

It is a cyclic number.

It is not a de Polignac number, because 99757081 - 2¹ = 99757079 is a prime.

It is a super-2 number, since 2×99757081² = 19902950419281122, which contains 22 as substring.

Together with 99757079, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (99757001) 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, 49878540 + 49878541.

It is an arithmetic number, because the mean of its divisors is an integer number (49878541).

Almost surely, 2^99757081 is an apocalyptic number.

It is an amenable number.

99757081 is a deficient number, since it is larger than the sum of its proper divisors (1).

99757081 is an equidigital number, since it uses as much as digits as its factorization.

99757081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 158760, while the sum is 46.

The square root of 99757081 is about 9987.8466648222. The cubic root of 99757081 is about 463.7827352456.

The spelling of 99757081 in words is "ninety-nine million, seven hundred fifty-seven thousand, eighty-one".