1151367505 has 4 divisors (see below), whose sum is σ = 1381641012. Its totient is φ = 921094000.

The previous prime is 1151367499. The next prime is 1151367523. The reversal of 1151367505 is 5057631511.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5057631511 = 65521 ⋅77191.

It can be written as a sum of positive squares in 2 ways, for example, as 656794384 + 494573121 = 25628^2 + 22239^2 .

It is not a de Polignac number, because 1151367505 - 2⁵ = 1151367473 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 115136746 + ... + 115136755.

It is an arithmetic number, because the mean of its divisors is an integer number (345410253).

Almost surely, 2^1151367505 is an apocalyptic number.

It is an amenable number.

1151367505 is a deficient number, since it is larger than the sum of its proper divisors (230273507).

1151367505 is an equidigital number, since it uses as much as digits as its factorization.

1151367505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230273506.

The product of its (nonzero) digits is 15750, while the sum is 34.

The square root of 1151367505 is about 33931.8066863526. The cubic root of 1151367505 is about 1048.1046700348.

The spelling of 1151367505 in words is "one billion, one hundred fifty-one million, three hundred sixty-seven thousand, five hundred five".