51103455400 has 24 divisors (see below), whose sum is σ = 118815534270. Its totient is φ = 20441382080.

The previous prime is 51103455397. The next prime is 51103455407. The reversal of 51103455400 is 455430115.

It can be written as a sum of positive squares in 3 ways, for example, as 34336831204 + 16766624196 = 185302^2 + 129486^2 .

It is a super-2 number, since 2×51103455400² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51103455407) 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, 127758439 + ... + 127758838.

Almost surely, 2^51103455400 is an apocalyptic number.

51103455400 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

51103455400 is an abundant number, since it is smaller than the sum of its proper divisors (67712078870).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51103455400 is a wasteful number, since it uses less digits than its factorization.

51103455400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255517293 (or 255517284 counting only the distinct ones).

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

Adding to 51103455400 its reverse (455430115), we get a palindrome (51558885515).

The spelling of 51103455400 in words is "fifty-one billion, one hundred three million, four hundred fifty-five thousand, four hundred".