1111055051 has 4 divisors (see below), whose sum is σ = 1113621432. Its totient is φ = 1108488672.

The previous prime is 1111055017. The next prime is 1111055063. The reversal of 1111055051 is 1505501111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1505501111 = 71 ⋅21204241.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1111055051 is a prime.

It is a super-2 number, since 2×1111055051² = 2468886652705225202, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1111055551) 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, 1282541 + ... + 1283406.

It is an arithmetic number, because the mean of its divisors is an integer number (278405358).

Almost surely, 2^1111055051 is an apocalyptic number.

1111055051 is a deficient number, since it is larger than the sum of its proper divisors (2566381).

1111055051 is an equidigital number, since it uses as much as digits as its factorization.

1111055051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2566380.

The product of its (nonzero) digits is 125, while the sum is 20.

The square root of 1111055051 is about 33332.4924210597. The cubic root of 1111055051 is about 1035.7267491784.

Adding to 1111055051 its reverse (1505501111), we get a palindrome (2616556162).

The spelling of 1111055051 in words is "one billion, one hundred eleven million, fifty-five thousand, fifty-one".