15506713 has 2 divisors, whose sum is σ = 15506714. Its totient is φ = 15506712.

The previous prime is 15506653. The next prime is 15506719. The reversal of 15506713 is 31760551.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15264649 + 242064 = 3907^2 + 492^2 .

It is a cyclic number.

It is not a de Polignac number, because 15506713 - 2¹³ = 15498521 is a prime.

It is not a weakly prime, because it can be changed into another prime (15506719) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7753356 + 7753357.

It is an arithmetic number, because the mean of its divisors is an integer number (7753357).

Almost surely, 2^15506713 is an apocalyptic number.

It is an amenable number.

15506713 is a deficient number, since it is larger than the sum of its proper divisors (1).

15506713 is an equidigital number, since it uses as much as digits as its factorization.

15506713 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3150, while the sum is 28.

The square root of 15506713 is about 3937.8563965691. The cubic root of 15506713 is about 249.3675373131.

The spelling of 15506713 in words is "fifteen million, five hundred six thousand, seven hundred thirteen".