161406573 has 16 divisors (see below), whose sum is σ = 218427840. Its totient is φ = 106004096.

The previous prime is 161406529. The next prime is 161406587. The reversal of 161406573 is 375604161.

It is a cyclic number.

It is not a de Polignac number, because 161406573 - 2⁸ = 161406317 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161406593) 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, 83686 + ... + 85592.

It is an arithmetic number, because the mean of its divisors is an integer number (13651740).

Almost surely, 2^161406573 is an apocalyptic number.

It is an amenable number.

161406573 is a deficient number, since it is larger than the sum of its proper divisors (57021267).

161406573 is a wasteful number, since it uses less digits than its factorization.

161406573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2316.

The product of its (nonzero) digits is 15120, while the sum is 33.

The square root of 161406573 is about 12704.5886592207. The cubic root of 161406573 is about 544.4697285942.

The spelling of 161406573 in words is "one hundred sixty-one million, four hundred six thousand, five hundred seventy-three".