161560015 has 8 divisors (see below), whose sum is σ = 200557440. Its totient is φ = 124791072.

The previous prime is 161559991. The next prime is 161560031. The reversal of 161560015 is 510065161.

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 161560015 - 2⁷ = 161559887 is a prime.

It is a super-2 number, since 2×161560015² = 52203276893600450, which contains 22 as substring.

It is a congruent 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, 556959 + ... + 557248.

It is an arithmetic number, because the mean of its divisors is an integer number (25069680).

Almost surely, 2^161560015 is an apocalyptic number.

161560015 is a deficient number, since it is larger than the sum of its proper divisors (38997425).

161560015 is a wasteful number, since it uses less digits than its factorization.

161560015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1114241.

The product of its (nonzero) digits is 900, while the sum is 25.

The square root of 161560015 is about 12710.6260664060. The cubic root of 161560015 is about 544.6422082781.

The spelling of 161560015 in words is "one hundred sixty-one million, five hundred sixty thousand, fifteen".