1115162251 has 4 divisors (see below), whose sum is σ = 1274471152. Its totient is φ = 955853352.

The previous prime is 1115162233. The next prime is 1115162263. The reversal of 1115162251 is 1522615111.

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

It is a cyclic number.

It is not a de Polignac number, because 1115162251 - 2²⁹ = 578291339 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1115162221) 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, 79654440 + ... + 79654453.

It is an arithmetic number, because the mean of its divisors is an integer number (318617788).

Almost surely, 2^1115162251 is an apocalyptic number.

1115162251 is a deficient number, since it is larger than the sum of its proper divisors (159308901).

1115162251 is an equidigital number, since it uses as much as digits as its factorization.

1115162251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159308900.

The product of its digits is 600, while the sum is 25.

The square root of 1115162251 is about 33394.0451428095. The cubic root of 1115162251 is about 1037.0014252453.

Adding to 1115162251 its reverse (1522615111), we get a palindrome (2637777362).

The spelling of 1115162251 in words is "one billion, one hundred fifteen million, one hundred sixty-two thousand, two hundred fifty-one".