49987161 has 12 divisors (see below), whose sum is σ = 82518592. Its totient is φ = 28564056.

The previous prime is 49987129. The next prime is 49987163. The reversal of 49987161 is 16178994.

It is a happy number.

It is not a de Polignac number, because 49987161 - 2⁵ = 49987129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49987163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 396661 + ... + 396786.

Almost surely, 2^49987161 is an apocalyptic number.

It is an amenable number.

49987161 is a deficient number, since it is larger than the sum of its proper divisors (32531431).

49987161 is a wasteful number, since it uses less digits than its factorization.

49987161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 793460 (or 793457 counting only the distinct ones).

The product of its digits is 108864, while the sum is 45.

The square root of 49987161 is about 7070.1598991819. The cubic root of 49987161 is about 368.3716143110.

The spelling of 49987161 in words is "forty-nine million, nine hundred eighty-seven thousand, one hundred sixty-one".