50561568 has 54 divisors (see below), whose sum is σ = 144128439. Its totient is φ = 16813632.

The previous prime is 50561557. The next prime is 50561579. The reversal of 50561568 is 86516505.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It is an interprime number because it is at equal distance from previous prime (50561557) and next prime (50561579).

It can be written as a sum of positive squares in only one way, i.e., 25280784 + 25280784 = 5028^2 + 5028^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=5028.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 120463 + ... + 120881.

Almost surely, 2^50561568 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 50561568

50561568 is an abundant number, since it is smaller than the sum of its proper divisors (93566871).

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

50561568 is an equidigital number, since it uses as much as digits as its factorization.

50561568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 854 (or 424 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 36.

The square root of 50561568 is about 7110.6657916119. The cubic root of 50561568 is about 369.7772411278. Note that the first 3 decimals are identical.

The spelling of 50561568 in words is "fifty million, five hundred sixty-one thousand, five hundred sixty-eight".