366561161 has 4 divisors (see below), whose sum is σ = 366761472. Its totient is φ = 366360852.

The previous prime is 366561119. The next prime is 366561163. The reversal of 366561161 is 161165663.

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 366561161 - 2¹⁴ = 366544777 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a plaindrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (366561163) 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, 97385 + ... + 101078.

It is an arithmetic number, because the mean of its divisors is an integer number (91690368).

Almost surely, 2^366561161 is an apocalyptic number.

It is an amenable number.

366561161 is a deficient number, since it is larger than the sum of its proper divisors (200311).

366561161 is a wasteful number, since it uses less digits than its factorization.

366561161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200310.

The product of its digits is 19440, while the sum is 35.

The square root of 366561161 is about 19145.7870300492. The cubic root of 366561161 is about 715.6743998011.

The spelling of 366561161 in words is "three hundred sixty-six million, five hundred sixty-one thousand, one hundred sixty-one".