1147506505 has 4 divisors (see below), whose sum is σ = 1377007812. Its totient is φ = 918005200.

The previous prime is 1147506499. The next prime is 1147506527. The reversal of 1147506505 is 5056057411.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5056057411 = 107 ⋅47252873.

It can be written as a sum of positive squares in 2 ways, for example, as 187498249 + 960008256 = 13693^2 + 30984^2 .

It is not a de Polignac number, because 1147506505 - 2⁷ = 1147506377 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, 114750646 + ... + 114750655.

It is an arithmetic number, because the mean of its divisors is an integer number (344251953).

Almost surely, 2^1147506505 is an apocalyptic number.

It is an amenable number.

1147506505 is a deficient number, since it is larger than the sum of its proper divisors (229501307).

1147506505 is an equidigital number, since it uses as much as digits as its factorization.

1147506505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229501306.

The product of its (nonzero) digits is 21000, while the sum is 34.

The square root of 1147506505 is about 33874.8653871864. The cubic root of 1147506505 is about 1046.9317853270.

The spelling of 1147506505 in words is "one billion, one hundred forty-seven million, five hundred six thousand, five hundred five".