161001567 has 8 divisors (see below), whose sum is σ = 238520880. Its totient is φ = 107334360.

The previous prime is 161001563. The next prime is 161001571. The reversal of 161001567 is 765100161.

161001567 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (161001563) and next prime (161001571).

It is not a de Polignac number, because 161001567 - 2² = 161001563 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 5963021 = 161001567 / (1 + 6 + 1 + 0 + 0 + 1 + 5 + 6 + 7).

It is a self number, because there is not a number n which added to its sum of digits gives 161001567.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161001563) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2981484 + ... + 2981537.

It is an arithmetic number, because the mean of its divisors is an integer number (29815110).

Almost surely, 2^161001567 is an apocalyptic number.

161001567 is a deficient number, since it is larger than the sum of its proper divisors (77519313).

161001567 is an equidigital number, since it uses as much as digits as its factorization.

161001567 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5963030 (or 5963024 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 27.

The square root of 161001567 is about 12688.6392887496. The cubic root of 161001567 is about 544.0139474780.

The spelling of 161001567 in words is "one hundred sixty-one million, one thousand, five hundred sixty-seven".