72088550 has 12 divisors (see below), whose sum is σ = 134084796. Its totient is φ = 28835400.

The previous prime is 72088529. The next prime is 72088559. The reversal of 72088550 is 5588027.

It is a super-2 number, since 2×72088550² = 10393518082205000, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 72088550.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72088559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 720836 + ... + 720935.

It is an arithmetic number, because the mean of its divisors is an integer number (11173733).

Almost surely, 2^72088550 is an apocalyptic number.

72088550 is a deficient number, since it is larger than the sum of its proper divisors (61996246).

72088550 is a wasteful number, since it uses less digits than its factorization.

72088550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1441783 (or 1441778 counting only the distinct ones).

The product of its (nonzero) digits is 22400, while the sum is 35.

The square root of 72088550 is about 8490.4976297035. The cubic root of 72088550 is about 416.1872423549.

The spelling of 72088550 in words is "seventy-two million, eighty-eight thousand, five hundred fifty".