51105400503 has 16 divisors (see below), whose sum is σ = 70522128096. Its totient is φ = 32896604160.

The previous prime is 51105400471. The next prime is 51105400519. The reversal of 51105400503 is 30500450115.

It is not a de Polignac number, because 51105400503 - 2⁵ = 51105400471 is a prime.

It is a super-2 number, since 2×51105400503² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51105400543) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2129776 + ... + 2153637.

It is an arithmetic number, because the mean of its divisors is an integer number (4407633006).

Almost surely, 2^51105400503 is an apocalyptic number.

51105400503 is a deficient number, since it is larger than the sum of its proper divisors (19416727593).

51105400503 is a wasteful number, since it uses less digits than its factorization.

51105400503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4283554.

The product of its (nonzero) digits is 1500, while the sum is 24.

Adding to 51105400503 its reverse (30500450115), we get a palindrome (81605850618).

The spelling of 51105400503 in words is "fifty-one billion, one hundred five million, four hundred thousand, five hundred three".