51566593 has 16 divisors (see below), whose sum is σ = 59055696. Its totient is φ = 44605440.

The previous prime is 51566587. The next prime is 51566623. The reversal of 51566593 is 39566515.

It can be written as a sum of positive squares in 8 ways, for example, as 200704 + 51365889 = 448^2 + 7167^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51566593 is a prime.

It is a super-2 number, since 2×51566593² = 5318227027255298, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51566563) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 77683 + ... + 78343.

It is an arithmetic number, because the mean of its divisors is an integer number (3690981).

Almost surely, 2^51566593 is an apocalyptic number.

It is an amenable number.

51566593 is a deficient number, since it is larger than the sum of its proper divisors (7489103).

51566593 is a wasteful number, since it uses less digits than its factorization.

51566593 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1044.

The product of its digits is 121500, while the sum is 40.

The square root of 51566593 is about 7180.9883024553. The cubic root of 51566593 is about 372.2112363514.

The spelling of 51566593 in words is "fifty-one million, five hundred sixty-six thousand, five hundred ninety-three".