72751135 has 4 divisors (see below), whose sum is σ = 87301368. Its totient is φ = 58200904.

The previous prime is 72751127. The next prime is 72751207. The reversal of 72751135 is 53115727.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 53115727 = 7 ⋅7587961.

It is a cyclic number.

It is not a de Polignac number, because 72751135 - 2³ = 72751127 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 72751097 and 72751106.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7275109 + ... + 7275118.

It is an arithmetic number, because the mean of its divisors is an integer number (21825342).

Almost surely, 2^72751135 is an apocalyptic number.

72751135 is a deficient number, since it is larger than the sum of its proper divisors (14550233).

72751135 is a wasteful number, since it uses less digits than its factorization.

72751135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14550232.

The product of its digits is 7350, while the sum is 31.

The square root of 72751135 is about 8529.4275892348. The cubic root of 72751135 is about 417.4584514093.

The spelling of 72751135 in words is "seventy-two million, seven hundred fifty-one thousand, one hundred thirty-five".