152170905 has 32 divisors (see below), whose sum is σ = 260519040. Its totient is φ = 75617280.

The previous prime is 152170903. The next prime is 152170919. The reversal of 152170905 is 509071251.

It is not a de Polignac number, because 152170905 - 2¹ = 152170903 is a prime.

It is not an unprimeable number, because it can be changed into a prime (152170903) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 13009 + ... + 21761.

It is an arithmetic number, because the mean of its divisors is an integer number (8141220).

Almost surely, 2^152170905 is an apocalyptic number.

152170905 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

152170905 is a deficient number, since it is larger than the sum of its proper divisors (108348135).

152170905 is a wasteful number, since it uses less digits than its factorization.

152170905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8841.

The product of its (nonzero) digits is 3150, while the sum is 30.

The square root of 152170905 is about 12335.7571717345. The cubic root of 152170905 is about 533.8802737660.

The spelling of 152170905 in words is "one hundred fifty-two million, one hundred seventy thousand, nine hundred five".