13715551 has 4 divisors (see below), whose sum is σ = 13772704. Its totient is φ = 13658400.

The previous prime is 13715539. The next prime is 13715557. The reversal of 13715551 is 15551731.

13715551 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15551731 = 13 ⋅1196287.

It is a cyclic number.

It is not a de Polignac number, because 13715551 - 2¹¹ = 13713503 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13715557) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28215 + ... + 28696.

It is an arithmetic number, because the mean of its divisors is an integer number (3443176).

Almost surely, 2^13715551 is an apocalyptic number.

13715551 is a deficient number, since it is larger than the sum of its proper divisors (57153).

13715551 is an equidigital number, since it uses as much as digits as its factorization.

13715551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57152.

The product of its digits is 2625, while the sum is 28.

The square root of 13715551 is about 3703.4512282464. The cubic root of 13715551 is about 239.3707532645.

The spelling of 13715551 in words is "thirteen million, seven hundred fifteen thousand, five hundred fifty-one".