15620113 has 2 divisors, whose sum is σ = 15620114. Its totient is φ = 15620112.

The previous prime is 15620081. The next prime is 15620131. The reversal of 15620113 is 31102651.

Together with next prime (15620131) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12837889 + 2782224 = 3583^2 + 1668^2 .

It is a cyclic number.

It is not a de Polignac number, because 15620113 - 2⁵ = 15620081 is a prime.

It is a super-3 number, since 3×15620113³ (a number of 23 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (15620173) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7810056 + 7810057.

It is an arithmetic number, because the mean of its divisors is an integer number (7810057).

Almost surely, 2^15620113 is an apocalyptic number.

It is an amenable number.

15620113 is a deficient number, since it is larger than the sum of its proper divisors (1).

15620113 is an equidigital number, since it uses as much as digits as its factorization.

15620113 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 15620113 is about 3952.2288648306. The cubic root of 15620113 is about 249.9739332822.

Adding to 15620113 its reverse (31102651), we get a palindrome (46722764).

The spelling of 15620113 in words is "fifteen million, six hundred twenty thousand, one hundred thirteen".