75172101 has 8 divisors (see below), whose sum is σ = 101166624. Its totient is φ = 49646160.

The previous prime is 75172099. The next prime is 75172103. The reversal of 75172101 is 10127157.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (75172099) and next prime (75172103).

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

It is not a de Polignac number, because 75172101 - 2¹ = 75172099 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75172103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 116770 + ... + 117411.

It is an arithmetic number, because the mean of its divisors is an integer number (12645828).

Almost surely, 2^75172101 is an apocalyptic number.

It is an amenable number.

75172101 is a deficient number, since it is larger than the sum of its proper divisors (25994523).

75172101 is a wasteful number, since it uses less digits than its factorization.

75172101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234291.

The product of its (nonzero) digits is 490, while the sum is 24.

The square root of 75172101 is about 8670.1846001109. The cubic root of 75172101 is about 422.0386542462.

Adding to 75172101 its reverse (10127157), we get a palindrome (85299258).

The spelling of 75172101 in words is "seventy-five million, one hundred seventy-two thousand, one hundred one".