72417255 has 8 divisors (see below), whose sum is σ = 115867632. Its totient is φ = 38622528.

The previous prime is 72417217. The next prime is 72417259. The reversal of 72417255 is 55271427.

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

It is not a de Polignac number, because 72417255 - 2¹⁰ = 72416231 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72417259) 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 7 ways as a sum of consecutive naturals, for example, 2413894 + ... + 2413923.

It is an arithmetic number, because the mean of its divisors is an integer number (14483454).

Almost surely, 2^72417255 is an apocalyptic number.

72417255 is a deficient number, since it is larger than the sum of its proper divisors (43450377).

72417255 is a wasteful number, since it uses less digits than its factorization.

72417255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4827825.

The product of its digits is 19600, while the sum is 33.

The square root of 72417255 is about 8509.8328420716. The cubic root of 72417255 is about 416.8188517863.

The spelling of 72417255 in words is "seventy-two million, four hundred seventeen thousand, two hundred fifty-five".