161072573 has 8 divisors (see below), whose sum is σ = 162813888. Its totient is φ = 159337024.

The previous prime is 161072551. The next prime is 161072579. The reversal of 161072573 is 375270161.

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

It is a cyclic number.

It is not a de Polignac number, because 161072573 - 2¹² = 161068477 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161072579) 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, 76136 + ... + 78222.

It is an arithmetic number, because the mean of its divisors is an integer number (20351736).

Almost surely, 2^161072573 is an apocalyptic number.

It is an amenable number.

161072573 is a deficient number, since it is larger than the sum of its proper divisors (1741315).

161072573 is a wasteful number, since it uses less digits than its factorization.

161072573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2883.

The product of its (nonzero) digits is 8820, while the sum is 32.

The square root of 161072573 is about 12691.4369950766. The cubic root of 161072573 is about 544.0939106273.

The spelling of 161072573 in words is "one hundred sixty-one million, seventy-two thousand, five hundred seventy-three".