11713551 has 4 divisors (see below), whose sum is σ = 15618072. Its totient is φ = 7809032.

The previous prime is 11713517. The next prime is 11713553. The reversal of 11713551 is 15531711.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11713551 - 2¹³ = 11705359 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11713553) 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 in 3 ways as a sum of consecutive naturals, for example, 1952256 + ... + 1952261.

It is an arithmetic number, because the mean of its divisors is an integer number (3904518).

Almost surely, 2^11713551 is an apocalyptic number.

11713551 is a deficient number, since it is larger than the sum of its proper divisors (3904521).

11713551 is an equidigital number, since it uses as much as digits as its factorization.

11713551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3904520.

The product of its digits is 525, while the sum is 24.

The square root of 11713551 is about 3422.5065376125. The cubic root of 11713551 is about 227.1064790555.

The spelling of 11713551 in words is "eleven million, seven hundred thirteen thousand, five hundred fifty-one".