16201541 has 2 divisors, whose sum is σ = 16201542. Its totient is φ = 16201540.

The previous prime is 16201531. The next prime is 16201543. The reversal of 16201541 is 14510261.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10660225 + 5541316 = 3265^2 + 2354^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16201541 is a prime.

Together with 16201543, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16201543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8100770 + 8100771.

It is an arithmetic number, because the mean of its divisors is an integer number (8100771).

Almost surely, 2^16201541 is an apocalyptic number.

It is an amenable number.

16201541 is a deficient number, since it is larger than the sum of its proper divisors (1).

16201541 is an equidigital number, since it uses as much as digits as its factorization.

16201541 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 16201541 is about 4025.1137872115. The cubic root of 16201541 is about 253.0378223592.

The spelling of 16201541 in words is "sixteen million, two hundred one thousand, five hundred forty-one".