166315127 has 4 divisors (see below), whose sum is σ = 181434696. Its totient is φ = 151195560.

The previous prime is 166315103. The next prime is 166315153. The reversal of 166315127 is 721513661.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 166315127 - 2¹⁶ = 166249591 is a prime.

It is a super-2 number, since 2×166315127² = 55321442938052258, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 166315093 and 166315102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166315427) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7559768 + ... + 7559789.

It is an arithmetic number, because the mean of its divisors is an integer number (45358674).

Almost surely, 2^166315127 is an apocalyptic number.

166315127 is a deficient number, since it is larger than the sum of its proper divisors (15119569).

166315127 is a wasteful number, since it uses less digits than its factorization.

166315127 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15119568.

The product of its digits is 7560, while the sum is 32.

The square root of 166315127 is about 12896.3222276741. The cubic root of 166315127 is about 549.9340163267.

Adding to 166315127 its reverse (721513661), we get a palindrome (887828788).

The spelling of 166315127 in words is "one hundred sixty-six million, three hundred fifteen thousand, one hundred twenty-seven".