157017105 has 24 divisors (see below), whose sum is σ = 311044032. Its totient is φ = 71779104.

The previous prime is 157017103. The next prime is 157017109. The reversal of 157017105 is 501710751.

It is not a de Polignac number, because 157017105 - 2¹ = 157017103 is a prime.

It is not an unprimeable number, because it can be changed into a prime (157017103) 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 23 ways as a sum of consecutive naturals, for example, 248919 + ... + 249548.

It is an arithmetic number, because the mean of its divisors is an integer number (12960168).

Almost surely, 2^157017105 is an apocalyptic number.

157017105 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

157017105 is a deficient number, since it is larger than the sum of its proper divisors (154026927).

157017105 is a wasteful number, since it uses less digits than its factorization.

157017105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 498485 (or 498482 counting only the distinct ones).

The product of its (nonzero) digits is 1225, while the sum is 27.

The square root of 157017105 is about 12530.6466313595. The cubic root of 157017105 is about 539.4886620461.

Adding to 157017105 its reverse (501710751), we get a palindrome (658727856).

The spelling of 157017105 in words is "one hundred fifty-seven million, seventeen thousand, one hundred five".