840551552 has 16 divisors (see below), whose sum is σ = 1674536550. Its totient is φ = 420275712.

The previous prime is 840551549. The next prime is 840551557. The reversal of 840551552 is 255155048.

It can be written as a sum of positive squares in only one way, i.e., 796142656 + 44408896 = 28216^2 + 6664^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is not an unprimeable number, because it can be changed into a prime (840551557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3283277 + ... + 3283532.

Almost surely, 2^840551552 is an apocalyptic number.

It is an amenable number.

840551552 is a deficient number, since it is larger than the sum of its proper divisors (833984998).

840551552 is an equidigital number, since it uses as much as digits as its factorization.

840551552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6566823 (or 6566811 counting only the distinct ones).

The product of its (nonzero) digits is 40000, while the sum is 35.

The square root of 840551552 is about 28992.2671069373. The cubic root of 840551552 is about 943.7452630670.

The spelling of 840551552 in words is "eight hundred forty million, five hundred fifty-one thousand, five hundred fifty-two".