11712551 has 4 divisors (see below), whose sum is σ = 11728704. Its totient is φ = 11696400.

The previous prime is 11712539. The next prime is 11712553. The reversal of 11712551 is 15521711.

11712551 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: 15521711 = 23 ⋅674857.

It is a cyclic number.

It is not a de Polignac number, because 11712551 - 2⁶ = 11712487 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 (11712553) 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, 6935 + ... + 8456.

It is an arithmetic number, because the mean of its divisors is an integer number (2932176).

Almost surely, 2^11712551 is an apocalyptic number.

11712551 is a deficient number, since it is larger than the sum of its proper divisors (16153).

11712551 is an equidigital number, since it uses as much as digits as its factorization.

11712551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16152.

The product of its digits is 350, while the sum is 23.

The square root of 11712551 is about 3422.3604427354. The cubic root of 11712551 is about 227.1000160868.

The spelling of 11712551 in words is "eleven million, seven hundred twelve thousand, five hundred fifty-one".