51100544503 has 4 divisors (see below), whose sum is σ = 51103726920. Its totient is φ = 51097362088.

The previous prime is 51100544471. The next prime is 51100544531. The reversal of 51100544503 is 30544500115.

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

It is a cyclic number.

It is not a de Polignac number, because 51100544503 - 2⁵ = 51100544471 is a prime.

It is a super-2 number, since 2×51100544503² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51100544533) 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, 1567000 + ... + 1599277.

It is an arithmetic number, because the mean of its divisors is an integer number (12775931730).

Almost surely, 2^51100544503 is an apocalyptic number.

51100544503 is a deficient number, since it is larger than the sum of its proper divisors (3182417).

51100544503 is a wasteful number, since it uses less digits than its factorization.

51100544503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3182416.

The product of its (nonzero) digits is 6000, while the sum is 28.

The spelling of 51100544503 in words is "fifty-one billion, one hundred million, five hundred forty-four thousand, five hundred three".