50861520 has 200 divisors, whose sum is σ = 181488384. Its totient is φ = 13195008.

The previous prime is 50861513. The next prime is 50861521. The reversal of 50861520 is 2516805.

50861520 is a `hidden beast` number, since 508 + 6 + 152 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50861521) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 304477 + ... + 304643.

Almost surely, 2^50861520 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 50861520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90744192).

50861520 is an abundant number, since it is smaller than the sum of its proper divisors (130626864).

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

50861520 is a wasteful number, since it uses less digits than its factorization.

50861520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 239 (or 224 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

The square root of 50861520 is about 7131.7262987302. The cubic root of 50861520 is about 370.5070234208.

The spelling of 50861520 in words is "fifty million, eight hundred sixty-one thousand, five hundred twenty".