1115322551 has 8 divisors (see below), whose sum is σ = 1274857344. Its totient is φ = 955838520.

The previous prime is 1115322521. The next prime is 1115322563. The reversal of 1115322551 is 1552235111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1115322551 - 2¹⁸ = 1115060407 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1115322551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1115322521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72896 + ... + 86858.

It is an arithmetic number, because the mean of its divisors is an integer number (159357168).

Almost surely, 2^1115322551 is an apocalyptic number.

1115322551 is a deficient number, since it is larger than the sum of its proper divisors (159534793).

1115322551 is a wasteful number, since it uses less digits than its factorization.

1115322551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25381.

The product of its digits is 1500, while the sum is 26.

The square root of 1115322551 is about 33396.4451850792. The cubic root of 1115322551 is about 1037.0511110986.

Adding to 1115322551 its reverse (1552235111), we get a palindrome (2667557662).

The spelling of 1115322551 in words is "one billion, one hundred fifteen million, three hundred twenty-two thousand, five hundred fifty-one".