72475555 has 8 divisors (see below), whose sum is σ = 87336000. Its totient is φ = 57736896.

The previous prime is 72475549. The next prime is 72475583. The reversal of 72475555 is 55557427.

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 72475555 - 2⁹ = 72475043 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29130 + ... + 31519.

It is an arithmetic number, because the mean of its divisors is an integer number (10917000).

Almost surely, 2^72475555 is an apocalyptic number.

72475555 is a deficient number, since it is larger than the sum of its proper divisors (14860445).

72475555 is a wasteful number, since it uses less digits than its factorization.

72475555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60893.

The product of its digits is 245000, while the sum is 40.

The square root of 72475555 is about 8513.2576021168. The cubic root of 72475555 is about 416.9306760601.

The spelling of 72475555 in words is "seventy-two million, four hundred seventy-five thousand, five hundred fifty-five".