1115151 has 8 divisors (see below), whose sum is σ = 1491840. Its totient is φ = 740952.

The previous prime is 1115131. The next prime is 1115189. The reversal of 1115151 is 1515111.

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

It is not a de Polignac number, because 1115151 - 2¹¹ = 1113103 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1115151.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1115131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1140 + ... + 1878.

It is an arithmetic number, because the mean of its divisors is an integer number (186480).

2^1115151 is an apocalyptic number.

1115151 is a deficient number, since it is larger than the sum of its proper divisors (376689).

1115151 is an equidigital number, since it uses as much as digits as its factorization.

1115151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1245.

The product of its digits is 25, while the sum is 15.

The square root of 1115151 is about 1056.0071022488. The cubic root of 1115151 is about 103.6997937758.

Subtracting from 1115151 its sum of digits (15), we obtain a square (1115136 = 1056²).

It can be divided in two parts, 11 and 15151, that multiplied together give a palindrome (166661).

The spelling of 1115151 in words is "one million, one hundred fifteen thousand, one hundred fifty-one".