83560513 has 4 divisors (see below), whose sum is σ = 86441940. Its totient is φ = 80679088.

The previous prime is 83560493. The next prime is 83560573. The reversal of 83560513 is 31506538.

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 20007729 + 63552784 = 4473^2 + 7972^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-83560513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83560573) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1440670 + ... + 1440727.

It is an arithmetic number, because the mean of its divisors is an integer number (21610485).

Almost surely, 2^83560513 is an apocalyptic number.

It is an amenable number.

83560513 is a deficient number, since it is larger than the sum of its proper divisors (2881427).

83560513 is a wasteful number, since it uses less digits than its factorization.

83560513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2881426.

The product of its (nonzero) digits is 10800, while the sum is 31.

The square root of 83560513 is about 9141.1439656096. The cubic root of 83560513 is about 437.1867916629.

The spelling of 83560513 in words is "eighty-three million, five hundred sixty thousand, five hundred thirteen".