1115522545 has 8 divisors (see below), whose sum is σ = 1338952680. Its totient is φ = 892200960.

The previous prime is 1115522533. The next prime is 1115522561. The reversal of 1115522545 is 5452255111.

It can be written as a sum of positive squares in 4 ways, for example, as 106316721 + 1009205824 = 10311^2 + 31768^2 .

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

It is a de Polignac number, because none of the positive numbers 2^k-1115522545 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2490 + ... + 47299.

It is an arithmetic number, because the mean of its divisors is an integer number (167369085).

Almost surely, 2^1115522545 is an apocalyptic number.

It is an amenable number.

1115522545 is a deficient number, since it is larger than the sum of its proper divisors (223430135).

1115522545 is an equidigital number, since it uses as much as digits as its factorization.

1115522545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54275.

The product of its digits is 10000, while the sum is 31.

The square root of 1115522545 is about 33399.4392917007. The cubic root of 1115522545 is about 1037.1130936476.

Adding to 1115522545 its reverse (5452255111), we get a palindrome (6567777656).

The spelling of 1115522545 in words is "one billion, one hundred fifteen million, five hundred twenty-two thousand, five hundred forty-five".