11992571 has 8 divisors (see below), whose sum is σ = 12359424. Its totient is φ = 11629800.

The previous prime is 11992559. The next prime is 11992583. The reversal of 11992571 is 17529911.

It is an interprime number because it is at equal distance from previous prime (11992559) and next prime (11992583).

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11992571 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11992511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5570 + ... + 7416.

It is an arithmetic number, because the mean of its divisors is an integer number (1544928).

Almost surely, 2^11992571 is an apocalyptic number.

11992571 is a deficient number, since it is larger than the sum of its proper divisors (366853).

11992571 is a wasteful number, since it uses less digits than its factorization.

11992571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2041.

The product of its digits is 5670, while the sum is 35.

The square root of 11992571 is about 3463.0291653407. The cubic root of 11992571 is about 228.8955938572.

The spelling of 11992571 in words is "eleven million, nine hundred ninety-two thousand, five hundred seventy-one".