50779440 has 80 divisors (see below), whose sum is σ = 174914400. Its totient is φ = 13540608.

The previous prime is 50779409. The next prime is 50779441. The reversal of 50779440 is 4497705.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

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

It is a junction number, because it is equal to n+sod(n) for n = 50779395 and 50779404.

It is not an unprimeable number, because it can be changed into a prime (50779441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9595 + ... + 13914.

It is an arithmetic number, because the mean of its divisors is an integer number (2186430).

Almost surely, 2^50779440 is an apocalyptic number.

It is an amenable number.

50779440 is an abundant number, since it is smaller than the sum of its proper divisors (124134960).

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

50779440 is a wasteful number, since it uses less digits than its factorization.

50779440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23531 (or 23519 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 36.

The square root of 50779440 is about 7125.9694077367. The cubic root of 50779440 is about 370.3076088122.

The spelling of 50779440 in words is "fifty million, seven hundred seventy-nine thousand, four hundred forty".