11521051 has 2 divisors, whose sum is σ = 11521052. Its totient is φ = 11521050.

The previous prime is 11521039. The next prime is 11521187. The reversal of 11521051 is 15012511.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11521051 - 2⁷ = 11520923 is a prime.

It is a super-2 number, since 2×11521051² = 265469232289202, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11521021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5760525 + 5760526.

It is an arithmetic number, because the mean of its divisors is an integer number (5760526).

Almost surely, 2^11521051 is an apocalyptic number.

11521051 is a deficient number, since it is larger than the sum of its proper divisors (1).

11521051 is an equidigital number, since it uses as much as digits as its factorization.

11521051 is an evil number, because the sum of its binary digits is even.

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

The square root of 11521051 is about 3394.2673730866. The cubic root of 11521051 is about 225.8555149786.

Adding to 11521051 its reverse (15012511), we get a palindrome (26533562).

The spelling of 11521051 in words is "eleven million, five hundred twenty-one thousand, fifty-one".