193132561 has 2 divisors, whose sum is σ = 193132562. Its totient is φ = 193132560.

The previous prime is 193132559. The next prime is 193132571. The reversal of 193132561 is 165231391.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 191656336 + 1476225 = 13844^2 + 1215^2 .

It is a cyclic number.

It is not a de Polignac number, because 193132561 - 2¹ = 193132559 is a prime.

It is a super-2 number, since 2×193132561² = 74600372236837442, which contains 22 as substring.

Together with 193132559, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (193132571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 96566280 + 96566281.

It is an arithmetic number, because the mean of its divisors is an integer number (96566281).

Almost surely, 2^193132561 is an apocalyptic number.

It is an amenable number.

193132561 is a deficient number, since it is larger than the sum of its proper divisors (1).

193132561 is an equidigital number, since it uses as much as digits as its factorization.

193132561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4860, while the sum is 31.

The square root of 193132561 is about 13897.2141452883. The cubic root of 193132561 is about 578.0319353132.

The spelling of 193132561 in words is "one hundred ninety-three million, one hundred thirty-two thousand, five hundred sixty-one".