161373241 has 4 divisors (see below), whose sum is σ = 161758800. Its totient is φ = 160987684.

The previous prime is 161373239. The next prime is 161373263. The reversal of 161373241 is 142373161.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 161373241 - 2¹ = 161373239 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (161373041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 192151 + ... + 192988.

It is an arithmetic number, because the mean of its divisors is an integer number (40439700).

Almost surely, 2^161373241 is an apocalyptic number.

It is an amenable number.

161373241 is a deficient number, since it is larger than the sum of its proper divisors (385559).

161373241 is an equidigital number, since it uses as much as digits as its factorization.

161373241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 385558.

The product of its digits is 3024, while the sum is 28.

The square root of 161373241 is about 12703.2767819961. The cubic root of 161373241 is about 544.4322466130.

The spelling of 161373241 in words is "one hundred sixty-one million, three hundred seventy-three thousand, two hundred forty-one".