49216161 has 12 divisors (see below), whose sum is σ = 67965872. Its totient is φ = 31677744.

The previous prime is 49216157. The next prime is 49216169. The reversal of 49216161 is 16161294.

It is a happy number.

It is not a de Polignac number, because 49216161 - 2² = 49216157 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49216169) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7231 + ... + 12276.

Almost surely, 2^49216161 is an apocalyptic number.

It is an amenable number.

49216161 is a deficient number, since it is larger than the sum of its proper divisors (18749711).

49216161 is a wasteful number, since it uses less digits than its factorization.

49216161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19568 (or 19539 counting only the distinct ones).

The product of its digits is 2592, while the sum is 30.

The square root of 49216161 is about 7015.4230806132. The cubic root of 49216161 is about 366.4678763581.

It can be divided in two parts, 492 and 16161, that added together give a triangular number (16653 = T₁₈₂).

The spelling of 49216161 in words is "forty-nine million, two hundred sixteen thousand, one hundred sixty-one".