161017415 has 16 divisors (see below), whose sum is σ = 211195488. Its totient is φ = 117127296.

The previous prime is 161017357. The next prime is 161017447. The reversal of 161017415 is 514710161.

It is a happy number.

It is not a de Polignac number, because 161017415 - 2¹⁰ = 161016391 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14132 + ... + 22841.

It is an arithmetic number, because the mean of its divisors is an integer number (13199718).

Almost surely, 2^161017415 is an apocalyptic number.

161017415 is a deficient number, since it is larger than the sum of its proper divisors (50178073).

161017415 is a wasteful number, since it uses less digits than its factorization.

161017415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37058.

The product of its (nonzero) digits is 840, while the sum is 26.

The square root of 161017415 is about 12689.2637690293. The cubic root of 161017415 is about 544.0317966835.

Adding to 161017415 its reverse (514710161), we get a palindrome (675727576).

The spelling of 161017415 in words is "one hundred sixty-one million, seventeen thousand, four hundred fifteen".