15995801 has 2 divisors, whose sum is σ = 15995802. Its totient is φ = 15995800.

The previous prime is 15995789. The next prime is 15995807. The reversal of 15995801 is 10859951.

15995801 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15721225 + 274576 = 3965^2 + 524^2 .

It is a cyclic number.

It is not a de Polignac number, because 15995801 - 2⁶ = 15995737 is a prime.

It is not a weakly prime, because it can be changed into another prime (15995807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7997900 + 7997901.

It is an arithmetic number, because the mean of its divisors is an integer number (7997901).

Almost surely, 2^15995801 is an apocalyptic number.

It is an amenable number.

15995801 is a deficient number, since it is larger than the sum of its proper divisors (1).

15995801 is an equidigital number, since it uses as much as digits as its factorization.

15995801 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16200, while the sum is 38.

The square root of 15995801 is about 3999.4750905588. The cubic root of 15995801 is about 251.9621646817.

The spelling of 15995801 in words is "fifteen million, nine hundred ninety-five thousand, eight hundred one".