23537161 has 2 divisors, whose sum is σ = 23537162. Its totient is φ = 23537160.

The previous prime is 23537159. The next prime is 23537201. The reversal of 23537161 is 16173532.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19758025 + 3779136 = 4445^2 + 1944^2 .

It is a cyclic number.

It is not a de Polignac number, because 23537161 - 2¹ = 23537159 is a prime.

Together with 23537159, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (23537131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11768580 + 11768581.

It is an arithmetic number, because the mean of its divisors is an integer number (11768581).

Almost surely, 2^23537161 is an apocalyptic number.

It is an amenable number.

23537161 is a deficient number, since it is larger than the sum of its proper divisors (1).

23537161 is an equidigital number, since it uses as much as digits as its factorization.

23537161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3780, while the sum is 28.

The square root of 23537161 is about 4851.5112078609. The cubic root of 23537161 is about 286.5836167990.

The spelling of 23537161 in words is "twenty-three million, five hundred thirty-seven thousand, one hundred sixty-one".