161573151 has 16 divisors (see below), whose sum is σ = 229099104. Its totient is φ = 100936704.

The previous prime is 161573149. The next prime is 161573189. The reversal of 161573151 is 151375161.

161573151 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 161573151 - 2¹ = 161573149 is a prime.

It is a super-2 number, since 2×161573151² = 52211766248137602, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161573141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5085 + ... + 18681.

It is an arithmetic number, because the mean of its divisors is an integer number (14318694).

Almost surely, 2^161573151 is an apocalyptic number.

161573151 is a deficient number, since it is larger than the sum of its proper divisors (67525953).

161573151 is a wasteful number, since it uses less digits than its factorization.

161573151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13850.

The product of its digits is 3150, while the sum is 30.

The square root of 161573151 is about 12711.1427889077. The cubic root of 161573151 is about 544.6569689975.

The spelling of 161573151 in words is "one hundred sixty-one million, five hundred seventy-three thousand, one hundred fifty-one".