72175101 has 4 divisors (see below), whose sum is σ = 96233472. Its totient is φ = 48116732.

The previous prime is 72175097. The next prime is 72175133. The reversal of 72175101 is 10157127.

It is a happy number.

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: 10157127 = 3 ⋅3385709.

It is a cyclic number.

It is not a de Polignac number, because 72175101 - 2² = 72175097 is a prime.

It is a super-3 number, since 3×72175101³ (a number of 25 digits) contains 333 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72175141) 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, 12029181 + ... + 12029186.

It is an arithmetic number, because the mean of its divisors is an integer number (24058368).

Almost surely, 2^72175101 is an apocalyptic number.

It is an amenable number.

72175101 is a deficient number, since it is larger than the sum of its proper divisors (24058371).

72175101 is a wasteful number, since it uses less digits than its factorization.

72175101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24058370.

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

The square root of 72175101 is about 8495.5930340383. The cubic root of 72175101 is about 416.3537367363.

The spelling of 72175101 in words is "seventy-two million, one hundred seventy-five thousand, one hundred one".