51488543 has 6 divisors (see below), whose sum is σ = 53326104. Its totient is φ = 49712264.

The previous prime is 51488539. The next prime is 51488581. The reversal of 51488543 is 34588415.

It is not a de Polignac number, because 51488543 - 2² = 51488539 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51488497 and 51488506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51448543) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 29771 + ... + 31452.

It is an arithmetic number, because the mean of its divisors is an integer number (8887684).

Almost surely, 2^51488543 is an apocalyptic number.

51488543 is a deficient number, since it is larger than the sum of its proper divisors (1837561).

51488543 is an equidigital number, since it uses as much as digits as its factorization.

51488543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61281 (or 61252 counting only the distinct ones).

The product of its digits is 76800, while the sum is 38.

The square root of 51488543 is about 7175.5517557885. The cubic root of 51488543 is about 372.0233514266.

The spelling of 51488543 in words is "fifty-one million, four hundred eighty-eight thousand, five hundred forty-three".