50778125 has 12 divisors (see below), whose sum is σ = 63472500. Its totient is φ = 40620000.

The previous prime is 50778121. The next prime is 50778139. The reversal of 50778125 is 52187705.

It can be written as a sum of positive squares in 6 ways, for example, as 39980329 + 10797796 = 6323^2 + 3286^2 .

It is not a de Polignac number, because 50778125 - 2² = 50778121 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50778121) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5000 + ... + 11249.

It is an arithmetic number, because the mean of its divisors is an integer number (5289375).

Almost surely, 2^50778125 is an apocalyptic number.

It is an amenable number.

50778125 is a deficient number, since it is larger than the sum of its proper divisors (12694375).

50778125 is an frugal number, since it uses more digits than its factorization.

50778125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16274 (or 16254 counting only the distinct ones).

The product of its (nonzero) digits is 19600, while the sum is 35.

The square root of 50778125 is about 7125.8771389914. The cubic root of 50778125 is about 370.3044122513.

The spelling of 50778125 in words is "fifty million, seven hundred seventy-eight thousand, one hundred twenty-five".