48778857 has 12 divisors (see below), whose sum is σ = 70735860. Its totient is φ = 32391168.

The previous prime is 48778811. The next prime is 48778879. The reversal of 48778857 is 75887784.

48778857 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 48108096 + 670761 = 6936^2 + 819^2 .

It is not a de Polignac number, because 48778857 - 2⁸ = 48778601 is a prime.

It is not an unprimeable number, because it can be changed into a prime (48778157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8232 + ... + 12857.

It is an arithmetic number, because the mean of its divisors is an integer number (5894655).

Almost surely, 2^48778857 is an apocalyptic number.

It is an amenable number.

48778857 is a deficient number, since it is larger than the sum of its proper divisors (21957003).

48778857 is a wasteful number, since it uses less digits than its factorization.

48778857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21352 (or 21349 counting only the distinct ones).

The product of its digits is 3512320, while the sum is 54.

The square root of 48778857 is about 6984.1862088578. The cubic root of 48778857 is about 365.3792442753.

The spelling of 48778857 in words is "forty-eight million, seven hundred seventy-eight thousand, eight hundred fifty-seven".