50769978 has 24 divisors (see below), whose sum is σ = 118118592. Its totient is φ = 14505624.

The previous prime is 50769977. The next prime is 50769989. The reversal of 50769978 is 87996705.

It is a super-2 number, since 2×50769978² = 5155181332240968, which contains 22 as substring.

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 50769978.

It is not an unprimeable number, because it can be changed into a prime (50769977) 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 11 ways as a sum of consecutive naturals, for example, 86050 + ... + 86637.

It is an arithmetic number, because the mean of its divisors is an integer number (4921608).

Almost surely, 2^50769978 is an apocalyptic number.

50769978 is an abundant number, since it is smaller than the sum of its proper divisors (67348614).

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

50769978 is a wasteful number, since it uses less digits than its factorization.

50769978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172706 (or 172699 counting only the distinct ones).

The product of its (nonzero) digits is 952560, while the sum is 51.

The square root of 50769978 is about 7125.3054671361. The cubic root of 50769978 is about 370.2846069290.

The spelling of 50769978 in words is "fifty million, seven hundred sixty-nine thousand, nine hundred seventy-eight".