506172155 has 8 divisors (see below), whose sum is σ = 633815712. Its totient is φ = 387331648.

The previous prime is 506172133. The next prime is 506172169. The reversal of 506172155 is 551271605.

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 506172155 - 2¹⁶ = 506106619 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2200634 + ... + 2200863.

It is an arithmetic number, because the mean of its divisors is an integer number (79226964).

Almost surely, 2^506172155 is an apocalyptic number.

506172155 is a deficient number, since it is larger than the sum of its proper divisors (127643557).

506172155 is a wasteful number, since it uses less digits than its factorization.

506172155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4401525.

The product of its (nonzero) digits is 10500, while the sum is 32.

The square root of 506172155 is about 22498.2700446057. The cubic root of 506172155 is about 796.9530740985.

The spelling of 506172155 in words is "five hundred six million, one hundred seventy-two thousand, one hundred fifty-five".