1115422551 has 12 divisors (see below), whose sum is σ = 1611556128. Its totient is φ = 743434944.

The previous prime is 1115422549. The next prime is 1115422571. The reversal of 1115422551 is 1552245111.

It is a happy number.

1115422551 is a `hidden beast` number, since 111 + 542 + 2 + 5 + 5 + 1 = 666.

It is not a de Polignac number, because 1115422551 - 2¹ = 1115422549 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1115422541) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31951 + ... + 57023.

It is an arithmetic number, because the mean of its divisors is an integer number (134296344).

Almost surely, 2^1115422551 is an apocalyptic number.

1115422551 is a deficient number, since it is larger than the sum of its proper divisors (496133577).

1115422551 is a wasteful number, since it uses less digits than its factorization.

1115422551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30022 (or 30019 counting only the distinct ones).

The product of its digits is 2000, while the sum is 27.

The square root of 1115422551 is about 33397.9423168554. The cubic root of 1115422551 is about 1037.0821042290.

Adding to 1115422551 its reverse (1552245111), we get a palindrome (2667667662).

The spelling of 1115422551 in words is "one billion, one hundred fifteen million, four hundred twenty-two thousand, five hundred fifty-one".