72069055 has 8 divisors (see below), whose sum is σ = 87339744. Its totient is φ = 57084000.

The previous prime is 72069043. The next prime is 72069059. The reversal of 72069055 is 55096027.

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

It is not a de Polignac number, because 72069055 - 2⁹ = 72068543 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 72069055.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72069059) 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, 70851 + ... + 71860.

It is an arithmetic number, because the mean of its divisors is an integer number (10917468).

Almost surely, 2^72069055 is an apocalyptic number.

72069055 is a deficient number, since it is larger than the sum of its proper divisors (15270689).

72069055 is a wasteful number, since it uses less digits than its factorization.

72069055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142817.

The product of its (nonzero) digits is 18900, while the sum is 34.

The square root of 72069055 is about 8489.3495039373. The cubic root of 72069055 is about 416.1497222874.

It can be divided in two parts, 7206 and 9055, that added together give a palindrome (16261).

The spelling of 72069055 in words is "seventy-two million, sixty-nine thousand, fifty-five".