161524887 has 8 divisors (see below), whose sum is σ = 215720304. Its totient is φ = 107506368.

The previous prime is 161524877. The next prime is 161524903. The reversal of 161524887 is 788425161.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 161524887 - 2⁸ = 161524631 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161524817) 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 7 ways as a sum of consecutive naturals, for example, 42078 + ... + 45755.

It is an arithmetic number, because the mean of its divisors is an integer number (26965038).

Almost surely, 2^161524887 is an apocalyptic number.

161524887 is a deficient number, since it is larger than the sum of its proper divisors (54195417).

161524887 is an equidigital number, since it uses as much as digits as its factorization.

161524887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88449.

The product of its digits is 107520, while the sum is 42.

The square root of 161524887 is about 12709.2441553383. The cubic root of 161524887 is about 544.6027315584.

The spelling of 161524887 in words is "one hundred sixty-one million, five hundred twenty-four thousand, eight hundred eighty-seven".