11551061 has 4 divisors (see below), whose sum is σ = 11713824. Its totient is φ = 11388300.

The previous prime is 11551013. The next prime is 11551081. The reversal of 11551061 is 16015511.

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, and also an emirpimes, since its reverse is a distinct semiprime: 16015511 = 29 ⋅552259.

It is a cyclic number.

It is not a de Polignac number, because 11551061 - 2⁶ = 11550997 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 (11551081) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81275 + ... + 81416.

It is an arithmetic number, because the mean of its divisors is an integer number (2928456).

Almost surely, 2^11551061 is an apocalyptic number.

It is an amenable number.

11551061 is a deficient number, since it is larger than the sum of its proper divisors (162763).

11551061 is an equidigital number, since it uses as much as digits as its factorization.

11551061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162762.

The product of its (nonzero) digits is 150, while the sum is 20.

The square root of 11551061 is about 3398.6851869510. The cubic root of 11551061 is about 226.0514475507.

Adding to 11551061 its reverse (16015511), we get a palindrome (27566572).

The spelling of 11551061 in words is "eleven million, five hundred fifty-one thousand, sixty-one".