50861772 has 72 divisors (see below), whose sum is σ = 139426560. Its totient is φ = 15540480.

The previous prime is 50861749. The next prime is 50861779. The reversal of 50861772 is 27716805.

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

It is not an unprimeable number, because it can be changed into a prime (50861779) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 89104 + ... + 89672.

It is an arithmetic number, because the mean of its divisors is an integer number (1936480).

Almost surely, 2^50861772 is an apocalyptic number.

50861772 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 50861772, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69713280).

50861772 is an abundant number, since it is smaller than the sum of its proper divisors (88564788).

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

50861772 is a wasteful number, since it uses less digits than its factorization.

50861772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 783 (or 778 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 36.

The square root of 50861772 is about 7131.7439662400. The cubic root of 50861772 is about 370.5076353281.

The spelling of 50861772 in words is "fifty million, eight hundred sixty-one thousand, seven hundred seventy-two".