11611051 has 4 divisors (see below), whose sum is σ = 12294072. Its totient is φ = 10928032.

The previous prime is 11611043. The next prime is 11611057. The reversal of 11611051 is 15011611.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15011611 = 1559 ⋅9629.

It is a cyclic number.

It is not a de Polignac number, because 11611051 - 2³ = 11611043 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11611057) 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, 341485 + ... + 341518.

It is an arithmetic number, because the mean of its divisors is an integer number (3073518).

Almost surely, 2^11611051 is an apocalyptic number.

11611051 is a deficient number, since it is larger than the sum of its proper divisors (683021).

11611051 is an equidigital number, since it uses as much as digits as its factorization.

11611051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 683020.

The product of its (nonzero) digits is 30, while the sum is 16.

The square root of 11611051 is about 3407.4992296404. The cubic root of 11611051 is about 226.4421019376.

Adding to 11611051 its reverse (15011611), we get a palindrome (26622662).

The spelling of 11611051 in words is "eleven million, six hundred eleven thousand, fifty-one".