49787137 has 4 divisors (see below), whose sum is σ = 49813060. Its totient is φ = 49761216.

The previous prime is 49787131. The next prime is 49787183. The reversal of 49787137 is 73178794.

49787137 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Cunningham number, because it is equal to 84⁴+1.

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 43877376 + 5909761 = 6624^2 + 2431^2 .

It is a cyclic number.

It is not a de Polignac number, because 49787137 - 2²³ = 41398529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49787131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9828 + ... + 14005.

It is an arithmetic number, because the mean of its divisors is an integer number (12453265).

Almost surely, 2^49787137 is an apocalyptic number.

It is an amenable number.

49787137 is a deficient number, since it is larger than the sum of its proper divisors (25923).

49787137 is a wasteful number, since it uses less digits than its factorization.

49787137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25922.

The product of its digits is 296352, while the sum is 46.

The square root of 49787137 is about 7056.0000708617. Note that the first 4 decimals coincide. The cubic root of 49787137 is about 367.8796102136.

The spelling of 49787137 in words is "forty-nine million, seven hundred eighty-seven thousand, one hundred thirty-seven".