99750578 has 16 divisors (see below), whose sum is σ = 151118784. Its totient is φ = 49380240.

The previous prime is 99750571. The next prime is 99750593. The reversal of 99750578 is 87505799.

It is a super-2 number, since 2×99750578² = 19900355622668168, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (99750571) 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 in 7 ways as a sum of consecutive naturals, for example, 153851 + ... + 154497.

It is an arithmetic number, because the mean of its divisors is an integer number (9444924).

Almost surely, 2^99750578 is an apocalyptic number.

99750578 is a deficient number, since it is larger than the sum of its proper divisors (51368206).

99750578 is a wasteful number, since it uses less digits than its factorization.

99750578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1297.

The product of its (nonzero) digits is 793800, while the sum is 50.

The square root of 99750578 is about 9987.5211138700. The cubic root of 99750578 is about 463.7726572821.

The spelling of 99750578 in words is "ninety-nine million, seven hundred fifty thousand, five hundred seventy-eight".