161701047 has 6 divisors (see below), whose sum is σ = 233568192. Its totient is φ = 107800692.

The previous prime is 161701021. The next prime is 161701061. The reversal of 161701047 is 740107161.

161701047 is a `hidden beast` number, since 1 + 617 + 0 + 1 + 0 + 47 = 666.

It is not a de Polignac number, because 161701047 - 2⁶ = 161700983 is a prime.

It is a super-2 number, since 2×161701047² = 52294457201792418, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 161701047.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161701087) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8983383 + ... + 8983400.

It is an arithmetic number, because the mean of its divisors is an integer number (38928032).

Almost surely, 2^161701047 is an apocalyptic number.

161701047 is a deficient number, since it is larger than the sum of its proper divisors (71867145).

161701047 is a wasteful number, since it uses less digits than its factorization.

161701047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17966789 (or 17966786 counting only the distinct ones).

The product of its (nonzero) digits is 1176, while the sum is 27.

The square root of 161701047 is about 12716.1726553236. The cubic root of 161701047 is about 544.8006419517.

The spelling of 161701047 in words is "one hundred sixty-one million, seven hundred one thousand, forty-seven".