49980857 has 4 divisors (see below), whose sum is σ = 50583120. Its totient is φ = 49378596.

The previous prime is 49980841. The next prime is 49980869. The reversal of 49980857 is 75808994.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 75808994 = 2 ⋅37904497.

It is a cyclic number.

It is not a de Polignac number, because 49980857 - 2⁴ = 49980841 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49980157) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 301007 + ... + 301172.

It is an arithmetic number, because the mean of its divisors is an integer number (12645780).

Almost surely, 2^49980857 is an apocalyptic number.

It is an amenable number.

49980857 is a deficient number, since it is larger than the sum of its proper divisors (602263).

49980857 is an equidigital number, since it uses as much as digits as its factorization.

49980857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 602262.

The product of its (nonzero) digits is 725760, while the sum is 50.

The square root of 49980857 is about 7069.7140677682. The cubic root of 49980857 is about 368.3561282526.

The spelling of 49980857 in words is "forty-nine million, nine hundred eighty thousand, eight hundred fifty-seven".