51100543 has 4 divisors (see below), whose sum is σ = 55031368. Its totient is φ = 47169720.

The previous prime is 51100531. The next prime is 51100547. The reversal of 51100543 is 34500115.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 51100543 - 2¹³ = 51092351 is a prime.

It is a super-2 number, since 2×51100543² = 5222530989789698, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51100543.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51100547) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1965393 + ... + 1965418.

It is an arithmetic number, because the mean of its divisors is an integer number (13757842).

Almost surely, 2^51100543 is an apocalyptic number.

51100543 is a deficient number, since it is larger than the sum of its proper divisors (3930825).

51100543 is a wasteful number, since it uses less digits than its factorization.

51100543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3930824.

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 51100543 is about 7148.4643805506. The cubic root of 51100543 is about 371.0865141174.

Adding to 51100543 its reverse (34500115), we get a palindrome (85600658).

The spelling of 51100543 in words is "fifty-one million, one hundred thousand, five hundred forty-three".