472217145 has 8 divisors (see below), whose sum is σ = 755547456. Its totient is φ = 251849136.

The previous prime is 472217107. The next prime is 472217147. The reversal of 472217145 is 541712274.

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

It is not a de Polignac number, because 472217145 - 2¹⁶ = 472151609 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (472217147) 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, 15740557 + ... + 15740586.

It is an arithmetic number, because the mean of its divisors is an integer number (94443432).

Almost surely, 2^472217145 is an apocalyptic number.

It is an amenable number.

472217145 is a deficient number, since it is larger than the sum of its proper divisors (283330311).

472217145 is a wasteful number, since it uses less digits than its factorization.

472217145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31481151.

The product of its digits is 15680, while the sum is 33.

The square root of 472217145 is about 21730.5578621443. The cubic root of 472217145 is about 778.7186638393.

The spelling of 472217145 in words is "four hundred seventy-two million, two hundred seventeen thousand, one hundred forty-five".