50921964 has 72 divisors (see below), whose sum is σ = 134464512. Its totient is φ = 16230240.

The previous prime is 50921963. The next prime is 50921971. The reversal of 50921964 is 46912905.

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 (50921963) 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, 114727 + ... + 115169.

Almost surely, 2^50921964 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 50921964, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67232256).

50921964 is an abundant number, since it is smaller than the sum of its proper divisors (83542548).

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

50921964 is a wasteful number, since it uses less digits than its factorization.

50921964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 587 (or 582 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 36.

The square root of 50921964 is about 7135.9627241179. The cubic root of 50921964 is about 370.6537359123.

It can be divided in two parts, 5092 and 1964, that added together give a square (7056 = 84²).

The spelling of 50921964 in words is "fifty million, nine hundred twenty-one thousand, nine hundred sixty-four".