72160751 has 8 divisors (see below), whose sum is σ = 79519440. Its totient is φ = 65060352.

The previous prime is 72160747. The next prime is 72160769. The reversal of 72160751 is 15706127.

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 72160751 - 2² = 72160747 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72160771) 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, 63986 + ... + 65103.

It is an arithmetic number, because the mean of its divisors is an integer number (9939930).

Almost surely, 2^72160751 is an apocalyptic number.

72160751 is a deficient number, since it is larger than the sum of its proper divisors (7358689).

72160751 is a wasteful number, since it uses less digits than its factorization.

72160751 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129145.

The product of its (nonzero) digits is 2940, while the sum is 29.

The square root of 72160751 is about 8494.7484365342. The cubic root of 72160751 is about 416.3261414758.

Adding to 72160751 its reverse (15706127), we get a palindrome (87866878).

The spelling of 72160751 in words is "seventy-two million, one hundred sixty thousand, seven hundred fifty-one".