50561560 has 64 divisors (see below), whose sum is σ = 130636800. Its totient is φ = 17252736.

The previous prime is 50561557. The next prime is 50561579. The reversal of 50561560 is 6516505.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 100269 + ... + 100771.

It is an arithmetic number, because the mean of its divisors is an integer number (2041200).

Almost surely, 2^50561560 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 50561560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65318400).

50561560 is an abundant number, since it is smaller than the sum of its proper divisors (80075240).

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

50561560 is a wasteful number, since it uses less digits than its factorization.

50561560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 880 (or 876 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 28.

The square root of 50561560 is about 7110.6652290767. The cubic root of 50561560 is about 369.7772216253. Note that the first 3 decimals are identical.

The spelling of 50561560 in words is "fifty million, five hundred sixty-one thousand, five hundred sixty".