50778140 has 48 divisors (see below), whose sum is σ = 122314752. Its totient is φ = 17345856.

The previous prime is 50778139. The next prime is 50778151. The reversal of 50778140 is 4187705.

It is a junction number, because it is equal to n+sod(n) for n = 50778097 and 50778106.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53147 + ... + 54093.

It is an arithmetic number, because the mean of its divisors is an integer number (2548224).

Almost surely, 2^50778140 is an apocalyptic number.

It is an amenable number.

50778140 is an abundant number, since it is smaller than the sum of its proper divisors (71536612).

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

50778140 is a wasteful number, since it uses less digits than its factorization.

50778140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1346 (or 1344 counting only the distinct ones).

The product of its (nonzero) digits is 7840, while the sum is 32.

The square root of 50778140 is about 7125.8781914933. The cubic root of 50778140 is about 370.3044487143.

The spelling of 50778140 in words is "fifty million, seven hundred seventy-eight thousand, one hundred forty".