75099891 has 8 divisors (see below), whose sum is σ = 101258640. Its totient is φ = 49503872.

The previous prime is 75099883. The next prime is 75099901. The reversal of 75099891 is 19899057.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 75099891 - 2³ = 75099883 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 75099891.

It is not an unprimeable number, because it can be changed into a prime (75099841) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 140370 + ... + 140903.

It is an arithmetic number, because the mean of its divisors is an integer number (12657330).

Almost surely, 2^75099891 is an apocalyptic number.

75099891 is a deficient number, since it is larger than the sum of its proper divisors (26158749).

75099891 is a wasteful number, since it uses less digits than its factorization.

75099891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 281365.

The product of its (nonzero) digits is 204120, while the sum is 48.

The square root of 75099891 is about 8666.0193283883. The cubic root of 75099891 is about 421.9034747749.

The spelling of 75099891 in words is "seventy-five million, ninety-nine thousand, eight hundred ninety-one".