15599401 has 2 divisors, whose sum is σ = 15599402. Its totient is φ = 15599400.

The previous prime is 15599383. The next prime is 15599407. The reversal of 15599401 is 10499551.

It is a happy number.

15599401 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., 9954025 + 5645376 = 3155^2 + 2376^2 .

It is a cyclic number.

It is not a de Polignac number, because 15599401 - 2⁵ = 15599369 is a prime.

It is not a weakly prime, because it can be changed into another prime (15599407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7799700 + 7799701.

It is an arithmetic number, because the mean of its divisors is an integer number (7799701).

Almost surely, 2^15599401 is an apocalyptic number.

It is an amenable number.

15599401 is a deficient number, since it is larger than the sum of its proper divisors (1).

15599401 is an equidigital number, since it uses as much as digits as its factorization.

15599401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8100, while the sum is 34.

The square root of 15599401 is about 3949.6077020383. The cubic root of 15599401 is about 249.8633973725.

The spelling of 15599401 in words is "fifteen million, five hundred ninety-nine thousand, four hundred one".