531778576 has 30 divisors (see below), whose sum is σ = 1198538430. Its totient is φ = 227904768.

The previous prime is 531778537. The next prime is 531778579. The reversal of 531778576 is 675877135.

It can be written as a sum of positive squares in only one way, i.e., 461218576 + 70560000 = 21476^2 + 8400^2 .

It is a hoax number, since the sum of its digits (49) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is not an unprimeable number, because it can be changed into a prime (531778579) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 338361 + ... + 339928.

It is an arithmetic number, because the mean of its divisors is an integer number (39951281).

Almost surely, 2^531778576 is an apocalyptic number.

531778576 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

531778576 is an abundant number, since it is smaller than the sum of its proper divisors (666759854).

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

531778576 is a wasteful number, since it uses less digits than its factorization.

531778576 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 678311 (or 678298 counting only the distinct ones).

The product of its digits is 1234800, while the sum is 49.

The square root of 531778576 is about 23060.3247158404. The cubic root of 531778576 is about 810.1714700748.

The spelling of 531778576 in words is "five hundred thirty-one million, seven hundred seventy-eight thousand, five hundred seventy-six".