1121517505 has 4 divisors (see below), whose sum is σ = 1345821012. Its totient is φ = 897214000.

The previous prime is 1121517461. The next prime is 1121517517. The reversal of 1121517505 is 5057151211.

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

It can be written as a sum of positive squares in 2 ways, for example, as 245831041 + 875686464 = 15679^2 + 29592^2 .

It is not a de Polignac number, because 1121517505 - 2¹³ = 1121509313 is a prime.

It is a super-3 number, since 3×1121517505³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is an unprimeable number.

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, 112151746 + ... + 112151755.

It is an arithmetic number, because the mean of its divisors is an integer number (336455253).

Almost surely, 2^1121517505 is an apocalyptic number.

It is an amenable number.

1121517505 is a deficient number, since it is larger than the sum of its proper divisors (224303507).

1121517505 is an equidigital number, since it uses as much as digits as its factorization.

1121517505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224303506.

The product of its (nonzero) digits is 1750, while the sum is 28.

The square root of 1121517505 is about 33489.0654542643. The cubic root of 1121517505 is about 1038.9676346376.

Adding to 1121517505 its reverse (5057151211), we get a palindrome (6178668716).

The spelling of 1121517505 in words is "one billion, one hundred twenty-one million, five hundred seventeen thousand, five hundred five".