99757481 has 2 divisors, whose sum is σ = 99757482. Its totient is φ = 99757480.

The previous prime is 99757403. The next prime is 99757499. The reversal of 99757481 is 18475799.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 64947481 + 34810000 = 8059^2 + 5900^2 .

It is a cyclic number.

It is not a de Polignac number, because 99757481 - 2¹⁰ = 99756457 is a prime.

It is a super-2 number, since 2×99757481² = 19903110030930722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (99757081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49878740 + 49878741.

It is an arithmetic number, because the mean of its divisors is an integer number (49878741).

Almost surely, 2^99757481 is an apocalyptic number.

It is an amenable number.

99757481 is a deficient number, since it is larger than the sum of its proper divisors (1).

99757481 is an equidigital number, since it uses as much as digits as its factorization.

99757481 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 635040, while the sum is 50.

The square root of 99757481 is about 9987.8666891384. The cubic root of 99757481 is about 463.7833551276.

The spelling of 99757481 in words is "ninety-nine million, seven hundred fifty-seven thousand, four hundred eighty-one".