1151061505 has 36 divisors (see below), whose sum is σ = 1542095100. Its totient is φ = 824158720.

The previous prime is 1151061497. The next prime is 1151061557. The reversal of 1151061505 is 5051601511.

It can be written as a sum of positive squares in 6 ways, for example, as 752020929 + 399040576 = 27423^2 + 19976^2 .

It is not a de Polignac number, because 1151061505 - 2³ = 1151061497 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1151061505.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 7725171 + ... + 7725319.

It is an arithmetic number, because the mean of its divisors is an integer number (42835975).

Almost surely, 2^1151061505 is an apocalyptic number.

It is an amenable number.

1151061505 is a deficient number, since it is larger than the sum of its proper divisors (391033595).

1151061505 is a wasteful number, since it uses less digits than its factorization.

1151061505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 402 (or 278 counting only the distinct ones).

The product of its (nonzero) digits is 750, while the sum is 25.

The square root of 1151061505 is about 33927.2973429951. The cubic root of 1151061505 is about 1048.0118098940.

It can be divided in two parts, 115106 and 1505, that added together give a palindrome (116611).

The spelling of 1151061505 in words is "one billion, one hundred fifty-one million, sixty-one thousand, five hundred five".