11560021 has 8 divisors (see below), whose sum is σ = 12952224. Its totient is φ = 10224720.

The previous prime is 11560019. The next prime is 11560063. The reversal of 11560021 is 12006511.

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 11560021 - 2¹ = 11560019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11559977 and 11560004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11560091) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13795 + ... + 14608.

It is an arithmetic number, because the mean of its divisors is an integer number (1619028).

Almost surely, 2^11560021 is an apocalyptic number.

11560021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11560021 is a deficient number, since it is larger than the sum of its proper divisors (1392203).

11560021 is a wasteful number, since it uses less digits than its factorization.

11560021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28451.

The product of its (nonzero) digits is 60, while the sum is 16.

The square root of 11560021 is about 3400.0030882339. The cubic root of 11560021 is about 226.1098807832.

Adding to 11560021 its reverse (12006511), we get a palindrome (23566532).

The spelling of 11560021 in words is "eleven million, five hundred sixty thousand, twenty-one".