11521037 has 4 divisors (see below), whose sum is σ = 12568416. Its totient is φ = 10473660.

The previous prime is 11521031. The next prime is 11521039. The reversal of 11521037 is 73012511.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11521037 - 2⁴ = 11521021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11521031) 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, 523673 + ... + 523694.

It is an arithmetic number, because the mean of its divisors is an integer number (3142104).

Almost surely, 2^11521037 is an apocalyptic number.

It is an amenable number.

11521037 is a deficient number, since it is larger than the sum of its proper divisors (1047379).

11521037 is a wasteful number, since it uses less digits than its factorization.

11521037 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1047378.

The product of its (nonzero) digits is 210, while the sum is 20.

The square root of 11521037 is about 3394.2653107852. The cubic root of 11521037 is about 225.8554234945.

Adding to 11521037 its reverse (73012511), we get a palindrome (84533548).

The spelling of 11521037 in words is "eleven million, five hundred twenty-one thousand, thirty-seven".