72775255 has 8 divisors (see below), whose sum is σ = 99806112. Its totient is φ = 49903008.

The previous prime is 72775253. The next prime is 72775303. The reversal of 72775255 is 55257727.

It is a happy number.

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 72775255 - 2¹ = 72775253 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72775253) 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, 1039612 + ... + 1039681.

It is an arithmetic number, because the mean of its divisors is an integer number (12475764).

Almost surely, 2^72775255 is an apocalyptic number.

72775255 is a deficient number, since it is larger than the sum of its proper divisors (27030857).

72775255 is a wasteful number, since it uses less digits than its factorization.

72775255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2079305.

The product of its digits is 171500, while the sum is 40.

The square root of 72775255 is about 8530.8414004716. The cubic root of 72775255 is about 417.5045812064.

The spelling of 72775255 in words is "seventy-two million, seven hundred seventy-five thousand, two hundred fifty-five".