49698161 has 4 divisors (see below), whose sum is σ = 50190324. Its totient is φ = 49206000.

The previous prime is 49698149. The next prime is 49698169. The reversal of 49698161 is 16189694.

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

It can be written as a sum of positive squares in 2 ways, for example, as 34339600 + 15358561 = 5860^2 + 3919^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-49698161 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 (49698169) 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, 245930 + ... + 246131.

It is an arithmetic number, because the mean of its divisors is an integer number (12547581).

Almost surely, 2^49698161 is an apocalyptic number.

It is an amenable number.

49698161 is a deficient number, since it is larger than the sum of its proper divisors (492163).

49698161 is a wasteful number, since it uses less digits than its factorization.

49698161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 492162.

The product of its digits is 93312, while the sum is 44.

The square root of 49698161 is about 7049.6922627871. The cubic root of 49698161 is about 367.6603301841.

The spelling of 49698161 in words is "forty-nine million, six hundred ninety-eight thousand, one hundred sixty-one".