51220543 has 16 divisors (see below), whose sum is σ = 57713184. Its totient is φ = 45048960.

The previous prime is 51220537. The next prime is 51220549. The reversal of 51220543 is 34502215.

51220543 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (51220537) and next prime (51220549).

It is not a de Polignac number, because 51220543 - 2¹³ = 51212351 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 (51220549) 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 15 ways as a sum of consecutive naturals, for example, 128821 + ... + 129217.

It is an arithmetic number, because the mean of its divisors is an integer number (3607074).

Almost surely, 2^51220543 is an apocalyptic number.

51220543 is a deficient number, since it is larger than the sum of its proper divisors (6492641).

51220543 is a wasteful number, since it uses less digits than its factorization.

51220543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 762.

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 51220543 is about 7156.8528698025. The cubic root of 51220543 is about 371.3767626315.

Adding to 51220543 its reverse (34502215), we get a palindrome (85722758).

The spelling of 51220543 in words is "fifty-one million, two hundred twenty thousand, five hundred forty-three".