49805218 has 4 divisors (see below), whose sum is σ = 74707830. Its totient is φ = 24902608.

The previous prime is 49805191. The next prime is 49805233. The reversal of 49805218 is 81250894.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 81250894 = 2 ⋅40625447.

It can be written as a sum of positive squares in only one way, i.e., 49801249 + 3969 = 7057^2 + 63^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12451303 + ... + 12451306.

Almost surely, 2^49805218 is an apocalyptic number.

49805218 is a deficient number, since it is larger than the sum of its proper divisors (24902612).

49805218 is a wasteful number, since it uses less digits than its factorization.

49805218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24902611.

The product of its (nonzero) digits is 23040, while the sum is 37.

The square root of 49805218 is about 7057.2812045433. The cubic root of 49805218 is about 367.9241386238.

The spelling of 49805218 in words is "forty-nine million, eight hundred five thousand, two hundred eighteen".