50531550 has 48 divisors (see below), whose sum is σ = 129372672. Its totient is φ = 13039200.

The previous prime is 50531539. The next prime is 50531563. The reversal of 50531550 is 5513505.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 50531550.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 784 + ... + 10083.

It is an arithmetic number, because the mean of its divisors is an integer number (2695264).

Almost surely, 2^50531550 is an apocalyptic number.

50531550 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 50531550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64686336).

50531550 is an abundant number, since it is smaller than the sum of its proper divisors (78841122).

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

50531550 is a wasteful number, since it uses less digits than its factorization.

50531550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10913 (or 10908 counting only the distinct ones).

The product of its (nonzero) digits is 1875, while the sum is 24.

The square root of 50531550 is about 7108.5547054236. The cubic root of 50531550 is about 369.7040487075.

The spelling of 50531550 in words is "fifty million, five hundred thirty-one thousand, five hundred fifty".