15900113 has 2 divisors, whose sum is σ = 15900114. Its totient is φ = 15900112.

The previous prime is 15900103. The next prime is 15900119. The reversal of 15900113 is 31100951.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9784384 + 6115729 = 3128^2 + 2473^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15900113 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (15900119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7950056 + 7950057.

It is an arithmetic number, because the mean of its divisors is an integer number (7950057).

Almost surely, 2^15900113 is an apocalyptic number.

It is an amenable number.

15900113 is a deficient number, since it is larger than the sum of its proper divisors (1).

15900113 is an equidigital number, since it uses as much as digits as its factorization.

15900113 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 135, while the sum is 20.

The square root of 15900113 is about 3987.4945767988. The cubic root of 15900113 is about 251.4587410761.

The spelling of 15900113 in words is "fifteen million, nine hundred thousand, one hundred thirteen".