1115501151 has 4 divisors (see below), whose sum is σ = 1487334872. Its totient is φ = 743667432.

The previous prime is 1115501143. The next prime is 1115501161. The reversal of 1115501151 is 1511055111.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1115501151 - 2³ = 1115501143 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 (1115501161) 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 3 ways as a sum of consecutive naturals, for example, 185916856 + ... + 185916861.

It is an arithmetic number, because the mean of its divisors is an integer number (371833718).

Almost surely, 2^1115501151 is an apocalyptic number.

1115501151 is a deficient number, since it is larger than the sum of its proper divisors (371833721).

1115501151 is an equidigital number, since it uses as much as digits as its factorization.

1115501151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 371833720.

The product of its (nonzero) digits is 125, while the sum is 21.

The square root of 1115501151 is about 33399.1190153273. The cubic root of 1115501151 is about 1037.1064635293.

Adding to 1115501151 its reverse (1511055111), we get a palindrome (2626556262).

The spelling of 1115501151 in words is "one billion, one hundred fifteen million, five hundred one thousand, one hundred fifty-one".