51260643 has 24 divisors (see below), whose sum is σ = 84940128. Its totient is φ = 29181312.

The previous prime is 51260633. The next prime is 51260647. The reversal of 51260643 is 34606215.

51260643 is a `hidden beast` number, since 5 + 12 + 6 + 0 + 643 = 666.

51260643 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 51260643 - 2⁶ = 51260579 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51260647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17071 + ... + 19847.

It is an arithmetic number, because the mean of its divisors is an integer number (3539172).

Almost surely, 2^51260643 is an apocalyptic number.

51260643 is a deficient number, since it is larger than the sum of its proper divisors (33679485).

51260643 is a wasteful number, since it uses less digits than its factorization.

51260643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3083 (or 3080 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 51260643 is about 7159.6538324140. The cubic root of 51260643 is about 371.4736529459.

Adding to 51260643 its reverse (34606215), we get a palindrome (85866858).

The spelling of 51260643 in words is "fifty-one million, two hundred sixty thousand, six hundred forty-three".