11521977 has 8 divisors (see below), whose sum is σ = 15548064. Its totient is φ = 7588608.

The previous prime is 11521967. The next prime is 11521997. The reversal of 11521977 is 77912511.

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

It is not a de Polignac number, because 11521977 - 2¹² = 11517881 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11521957) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22888 + ... + 23385.

It is an arithmetic number, because the mean of its divisors is an integer number (1943508).

Almost surely, 2^11521977 is an apocalyptic number.

It is an amenable number.

11521977 is a deficient number, since it is larger than the sum of its proper divisors (4026087).

11521977 is an equidigital number, since it uses as much as digits as its factorization.

11521977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46359.

The product of its digits is 4410, while the sum is 33.

The square root of 11521977 is about 3394.4037768068. The cubic root of 11521977 is about 225.8615658329.

The spelling of 11521977 in words is "eleven million, five hundred twenty-one thousand, nine hundred seventy-seven".