551205152450 has 24 divisors (see below), whose sum is σ = 1026970545348. Its totient is φ = 220110241280.

The previous prime is 551205152419. The next prime is 551205152489. The reversal of 551205152450 is 54251502155.

It can be written as a sum of positive squares in 6 ways, for example, as 151276657249 + 399928495201 = 388943^2 + 632399^2 .

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 551205152450.

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, 9265547 + ... + 9324846.

Almost surely, 2^551205152450 is an apocalyptic number.

551205152450 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

551205152450 is a deficient number, since it is larger than the sum of its proper divisors (475765392898).

551205152450 is a wasteful number, since it uses less digits than its factorization.

551205152450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18590998 (or 18590993 counting only the distinct ones).

The product of its (nonzero) digits is 50000, while the sum is 35.

The spelling of 551205152450 in words is "five hundred fifty-one billion, two hundred five million, one hundred fifty-two thousand, four hundred fifty".