49780857 has 8 divisors (see below), whose sum is σ = 75856576. Its totient is φ = 28446192.

The previous prime is 49780831. The next prime is 49780867. The reversal of 49780857 is 75808794.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 49780857 - 2⁶ = 49780793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49780807) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1185238 + ... + 1185279.

It is an arithmetic number, because the mean of its divisors is an integer number (9482072).

Almost surely, 2^49780857 is an apocalyptic number.

It is an amenable number.

49780857 is a deficient number, since it is larger than the sum of its proper divisors (26075719).

49780857 is a wasteful number, since it uses less digits than its factorization.

49780857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2370527.

The product of its (nonzero) digits is 564480, while the sum is 48.

The square root of 49780857 is about 7055.5550454943. Note that the first 3 decimals coincide. The cubic root of 49780857 is about 367.8641418200.

The spelling of 49780857 in words is "forty-nine million, seven hundred eighty thousand, eight hundred fifty-seven".