47786157 has 18 divisors (see below), whose sum is σ = 72163182. Its totient is φ = 30469296.

The previous prime is 47786153. The next prime is 47786173. The reversal of 47786157 is 75168774.

47786157 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 37711881 + 10074276 = 6141^2 + 3174^2 .

It is not a de Polignac number, because 47786157 - 2² = 47786153 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47786153) 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 17 ways as a sum of consecutive naturals, for example, 258 + ... + 9779.

Almost surely, 2^47786157 is an apocalyptic number.

It is an amenable number.

47786157 is a deficient number, since it is larger than the sum of its proper divisors (24377025).

47786157 is a wasteful number, since it uses less digits than its factorization.

47786157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10089 (or 10063 counting only the distinct ones).

The product of its digits is 329280, while the sum is 45.

The square root of 47786157 is about 6912.7532141687. The cubic root of 47786157 is about 362.8836227350.

The spelling of 47786157 in words is "forty-seven million, seven hundred eighty-six thousand, one hundred fifty-seven".