51600641 has 4 divisors (see below), whose sum is σ = 52574292. Its totient is φ = 50626992.

The previous prime is 51600629. The next prime is 51600649. The reversal of 51600641 is 14600615.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 14600615 = 5 ⋅2920123.

It can be written as a sum of positive squares in 2 ways, for example, as 44289025 + 7311616 = 6655^2 + 2704^2 .

It is a cyclic number.

It is not a de Polignac number, because 51600641 - 2¹⁰ = 51599617 is a prime.

It is a super-2 number, since 2×51600641² = 5325252303221762, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (51600649) 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, 486746 + ... + 486851.

It is an arithmetic number, because the mean of its divisors is an integer number (13143573).

Almost surely, 2^51600641 is an apocalyptic number.

It is an amenable number.

51600641 is a deficient number, since it is larger than the sum of its proper divisors (973651).

51600641 is an equidigital number, since it uses as much as digits as its factorization.

51600641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 973650.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 51600641 is about 7183.3586155781. The cubic root of 51600641 is about 372.2931386014.

The spelling of 51600641 in words is "fifty-one million, six hundred thousand, six hundred forty-one".