49781146 has 4 divisors (see below), whose sum is σ = 74671722. Its totient is φ = 24890572.

The previous prime is 49781113. The next prime is 49781161. The reversal of 49781146 is 64118794.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 46580625 + 3200521 = 6825^2 + 1789^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 49781099 and 49781108.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12445285 + ... + 12445288.

Almost surely, 2^49781146 is an apocalyptic number.

49781146 is a deficient number, since it is larger than the sum of its proper divisors (24890576).

49781146 is a wasteful number, since it uses less digits than its factorization.

49781146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24890575.

The product of its digits is 48384, while the sum is 40.

The square root of 49781146 is about 7055.5755257810. The cubic root of 49781146 is about 367.8648536902.

The spelling of 49781146 in words is "forty-nine million, seven hundred eighty-one thousand, one hundred forty-six".