551793840 has 80 divisors (see below), whose sum is σ = 1842152928. Its totient is φ = 135825408.

The previous prime is 551793811. The next prime is 551793863. The reversal of 551793840 is 48397155.

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 551793792 and 551793801.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 85309 + ... + 91548.

Almost surely, 2^551793840 is an apocalyptic number.

It is an amenable number.

551793840 is an abundant number, since it is smaller than the sum of its proper divisors (1290359088).

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

551793840 is a wasteful number, since it uses less digits than its factorization.

551793840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176886 (or 176880 counting only the distinct ones).

The product of its (nonzero) digits is 151200, while the sum is 42.

The square root of 551793840 is about 23490.2924630580. The cubic root of 551793840 is about 820.2110501769.

The spelling of 551793840 in words is "five hundred fifty-one million, seven hundred ninety-three thousand, eight hundred forty".