13709551 has 2 divisors, whose sum is σ = 13709552. Its totient is φ = 13709550.

The previous prime is 13709513. The next prime is 13709557. The reversal of 13709551 is 15590731.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13709551 - 2¹⁵ = 13676783 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13709557) 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, 6854775 + 6854776.

It is an arithmetic number, because the mean of its divisors is an integer number (6854776).

Almost surely, 2^13709551 is an apocalyptic number.

13709551 is a deficient number, since it is larger than the sum of its proper divisors (1).

13709551 is an equidigital number, since it uses as much as digits as its factorization.

13709551 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4725, while the sum is 31.

The square root of 13709551 is about 3702.6410844153. The cubic root of 13709551 is about 239.3358431589.

The spelling of 13709551 in words is "thirteen million, seven hundred nine thousand, five hundred fifty-one".