5901216161 has 2 divisors, whose sum is σ = 5901216162. Its totient is φ = 5901216160.

The previous prime is 5901216143. The next prime is 5901216193. The reversal of 5901216161 is 1616121095.

5901216161 = 54319² + 54320².

It is an a-pointer prime, because the next prime (5901216193) can be obtained adding 5901216161 to its sum of digits (32).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2950662400 + 2950553761 = 54320^2 + 54319^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5901216161 is a prime.

It is not a weakly prime, because it can be changed into another prime (5901216131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2950608080 + 2950608081.

It is an arithmetic number, because the mean of its divisors is an integer number (2950608081).

Almost surely, 2^5901216161 is an apocalyptic number.

5901216161 is the 54320-th centered square number.

It is an amenable number.

5901216161 is a deficient number, since it is larger than the sum of its proper divisors (1).

5901216161 is an equidigital number, since it uses as much as digits as its factorization.

5901216161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3240, while the sum is 32.

The square root of 5901216161 is about 76819.3736045797. The cubic root of 5901216161 is about 1807.0930170099.

The spelling of 5901216161 in words is "five billion, nine hundred one million, two hundred sixteen thousand, one hundred sixty-one".