551054440 has 32 divisors (see below), whose sum is σ = 1240600680. Its totient is φ = 220292352.

The previous prime is 551054411. The next prime is 551054459. The reversal of 551054440 is 44450155.

It can be written as a sum of positive squares in 4 ways, for example, as 550090116 + 964324 = 23454^2 + 982^2 .

It is a junction number, because it is equal to n+sod(n) for n = 551054399 and 551054408.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 94654 + ... + 100306.

Almost surely, 2^551054440 is an apocalyptic number.

It is an amenable number.

551054440 is an abundant number, since it is smaller than the sum of its proper divisors (689546240).

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

551054440 is a wasteful number, since it uses less digits than its factorization.

551054440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8101 (or 8097 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 28.

The square root of 551054440 is about 23474.5487709562. The cubic root of 551054440 is about 819.8445273355.

The spelling of 551054440 in words is "five hundred fifty-one million, fifty-four thousand, four hundred forty".