50409978 has 32 divisors (see below), whose sum is σ = 102600000. Its totient is φ = 16509696.

The previous prime is 50409977. The next prime is 50410001. The reversal of 50409978 is 87990405.

It is not an unprimeable number, because it can be changed into a prime (50409977) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 100773 + ... + 101271.

It is an arithmetic number, because the mean of its divisors is an integer number (3206250).

Almost surely, 2^50409978 is an apocalyptic number.

50409978 is an abundant number, since it is smaller than the sum of its proper divisors (52190022).

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

50409978 is a wasteful number, since it uses less digits than its factorization.

50409978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 766.

The product of its (nonzero) digits is 90720, while the sum is 42.

The square root of 50409978 is about 7099.9984507041. The cubic root of 50409978 is about 369.4073248242.

The spelling of 50409978 in words is "fifty million, four hundred nine thousand, nine hundred seventy-eight".