565553540 has 24 divisors (see below), whose sum is σ = 1199425752. Its totient is φ = 223980800.

The previous prime is 565553537. The next prime is 565553579. The reversal of 565553540 is 45355565.

It can be written as a sum of positive squares in 4 ways, for example, as 217208644 + 348344896 = 14738^2 + 18664^2 .

It is a junction number, because it is equal to n+sod(n) for n = 565553494 and 565553503.

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 7 ways as a sum of consecutive naturals, for example, 137969 + ... + 142008.

It is an arithmetic number, because the mean of its divisors is an integer number (49976073).

Almost surely, 2^565553540 is an apocalyptic number.

It is an amenable number.

565553540 is an abundant number, since it is smaller than the sum of its proper divisors (633872212).

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

565553540 is a wasteful number, since it uses less digits than its factorization.

565553540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280087 (or 280085 counting only the distinct ones).

The product of its (nonzero) digits is 225000, while the sum is 38.

The square root of 565553540 is about 23781.3695989108. The cubic root of 565553540 is about 826.9728310827.

It can be divided in two parts, 5655 and 53540, that added together give a palindrome (59195).

The spelling of 565553540 in words is "five hundred sixty-five million, five hundred fifty-three thousand, five hundred forty".