11215051 has 4 divisors (see below), whose sum is σ = 11241504. Its totient is φ = 11188600.

The previous prime is 11215049. The next prime is 11215079. The reversal of 11215051 is 15051211.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11215051 - 2¹ = 11215049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11215031) 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 3 ways as a sum of consecutive naturals, for example, 12580 + ... + 13441.

It is an arithmetic number, because the mean of its divisors is an integer number (2810376).

Almost surely, 2^11215051 is an apocalyptic number.

11215051 is a deficient number, since it is larger than the sum of its proper divisors (26453).

11215051 is an equidigital number, since it uses as much as digits as its factorization.

11215051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26452.

The product of its (nonzero) digits is 50, while the sum is 16.

The square root of 11215051 is about 3348.8880244045. Note that the first 3 decimals coincide. The cubic root of 11215051 is about 223.8379660987.

Adding to 11215051 its reverse (15051211), we get a palindrome (26266262).

The spelling of 11215051 in words is "eleven million, two hundred fifteen thousand, fifty-one".