75100109 has 4 divisors (see below), whose sum is σ = 85828704. Its totient is φ = 64371516.

The previous prime is 75100087. The next prime is 75100117. The reversal of 75100109 is 90100157.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 90100157 = 7 ⋅12871451.

It is a cyclic number.

It is not a de Polignac number, because 75100109 - 2²⁰ = 74051533 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75100159) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5364287 + ... + 5364300.

It is an arithmetic number, because the mean of its divisors is an integer number (21457176).

Almost surely, 2^75100109 is an apocalyptic number.

It is an amenable number.

75100109 is a deficient number, since it is larger than the sum of its proper divisors (10728595).

75100109 is a wasteful number, since it uses less digits than its factorization.

75100109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10728594.

The product of its (nonzero) digits is 315, while the sum is 23.

The square root of 75100109 is about 8666.0319062417. The cubic root of 75100109 is about 421.9038830084.

The spelling of 75100109 in words is "seventy-five million, one hundred thousand, one hundred nine".