11551579 has 8 divisors (see below), whose sum is σ = 12467952. Its totient is φ = 10639200.

The previous prime is 11551567. The next prime is 11551583. The reversal of 11551579 is 97515511.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11551579 - 2¹⁵ = 11518811 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11551559) 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 in 7 ways as a sum of consecutive naturals, for example, 8229 + ... + 9529.

It is an arithmetic number, because the mean of its divisors is an integer number (1558494).

Almost surely, 2^11551579 is an apocalyptic number.

11551579 is a deficient number, since it is larger than the sum of its proper divisors (916373).

11551579 is a wasteful number, since it uses less digits than its factorization.

11551579 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1997.

The product of its digits is 7875, while the sum is 34.

The square root of 11551579 is about 3398.7613920368. The cubic root of 11551579 is about 226.0548265448.

The spelling of 11551579 in words is "eleven million, five hundred fifty-one thousand, five hundred seventy-nine".