51103445200 has 60 divisors (see below), whose sum is σ = 122824206828. Its totient is φ = 20433356800.

The previous prime is 51103445189. The next prime is 51103445231. The reversal of 51103445200 is 254430115.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 3021481024 + 48081964176 = 54968^2 + 219276^2 .

It is a super-2 number, since 2×51103445200² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1053480 + ... + 1100920.

Almost surely, 2^51103445200 is an apocalyptic number.

51103445200 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

51103445200 is an abundant number, since it is smaller than the sum of its proper divisors (71720761628).

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

51103445200 is a wasteful number, since it uses less digits than its factorization.

51103445200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50152 (or 50141 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

Adding to 51103445200 its reverse (254430115), we get a palindrome (51357875315).

The spelling of 51103445200 in words is "fifty-one billion, one hundred three million, four hundred forty-five thousand, two hundred".