1455565613 has 4 divisors (see below), whose sum is σ = 1455889308. Its totient is φ = 1455241920.

The previous prime is 1455565597. The next prime is 1455565621. The reversal of 1455565613 is 3165655541.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3165655541 = 9349 ⋅338609.

It can be written as a sum of positive squares in 2 ways, for example, as 228674884 + 1226890729 = 15122^2 + 35027^2 .

It is a cyclic number.

It is not a de Polignac number, because 1455565613 - 2⁴ = 1455565597 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1455565633) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 155006 + ... + 164127.

It is an arithmetic number, because the mean of its divisors is an integer number (363972327).

Almost surely, 2^1455565613 is an apocalyptic number.

It is an amenable number.

1455565613 is a deficient number, since it is larger than the sum of its proper divisors (323695).

1455565613 is an equidigital number, since it uses as much as digits as its factorization.

1455565613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 323694.

The product of its digits is 270000, while the sum is 41.

The square root of 1455565613 is about 38151.8756157545. The cubic root of 1455565613 is about 1133.2974955123.

The spelling of 1455565613 in words is "one billion, four hundred fifty-five million, five hundred sixty-five thousand, six hundred thirteen".