551243776 has 26 divisors (see below), whose sum is σ = 1102361162. Its totient is φ = 275619840.

The previous prime is 551243761. The next prime is 551243779. The reversal of 551243776 is 677342155.

It can be written as a sum of positive squares in only one way, i.e., 548683776 + 2560000 = 23424^2 + 1600^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (551243779) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63195 + ... + 71386.

Almost surely, 2^551243776 is an apocalyptic number.

It is an amenable number.

551243776 is a deficient number, since it is larger than the sum of its proper divisors (551117386).

551243776 is an equidigital number, since it uses as much as digits as its factorization.

551243776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134605 (or 134583 counting only the distinct ones).

The product of its digits is 176400, while the sum is 40.

The square root of 551243776 is about 23478.5812177823. The cubic root of 551243776 is about 819.9384129831.

The spelling of 551243776 in words is "five hundred fifty-one million, two hundred forty-three thousand, seven hundred seventy-six".