551276550400 has 81 divisors (see below), whose sum is σ = 1364642635363. Its totient is φ = 220486860800.

The previous prime is 551276550371. The next prime is 551276550401. The reversal of 551276550400 is 4055672155.

The square root of 551276550400 is 742480.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 51235227904 + 500041322496 = 226352^2 + 707136^2 .

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (551276550401) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 59393760 + ... + 59403040.

Almost surely, 2^551276550400 is an apocalyptic number.

551276550400 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

551276550400 is the 742480-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 551276550400

551276550400 is an abundant number, since it is smaller than the sum of its proper divisors (813366084963).

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

551276550400 is an frugal number, since it uses more digits than its factorization.

551276550400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18588 (or 9288 counting only the distinct ones).

The product of its (nonzero) digits is 210000, while the sum is 40.

The spelling of 551276550400 in words is "five hundred fifty-one billion, two hundred seventy-six million, five hundred fifty thousand, four hundred".