51224154400 has 36 divisors (see below), whose sum is σ = 125050968882. Its totient is φ = 20489661440.

The previous prime is 51224154383. The next prime is 51224154419. The reversal of 51224154400 is 445142215.

It can be written as a sum of positive squares in 3 ways, for example, as 24100699536 + 27123454864 = 155244^2 + 164692^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 32014297 + ... + 32015896.

Almost surely, 2^51224154400 is an apocalyptic number.

51224154400 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

51224154400 is an abundant number, since it is smaller than the sum of its proper divisors (73826814482).

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

51224154400 is a wasteful number, since it uses less digits than its factorization.

51224154400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64030213 (or 64030200 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 28.

Adding to 51224154400 its reverse (445142215), we get a palindrome (51669296615).

The spelling of 51224154400 in words is "fifty-one billion, two hundred twenty-four million, one hundred fifty-four thousand, four hundred".