47557157 has 2 divisors, whose sum is σ = 47557158. Its totient is φ = 47557156.

The previous prime is 47557051. The next prime is 47557231. The reversal of 47557157 is 75175574.

It is a happy number.

47557157 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40972801 + 6584356 = 6401^2 + 2566^2 .

It is a cyclic number.

It is not a de Polignac number, because 47557157 - 2¹⁰ = 47556133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47557357) 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 as a sum of consecutive naturals, namely, 23778578 + 23778579.

It is an arithmetic number, because the mean of its divisors is an integer number (23778579).

Almost surely, 2^47557157 is an apocalyptic number.

It is an amenable number.

47557157 is a deficient number, since it is larger than the sum of its proper divisors (1).

47557157 is an equidigital number, since it uses as much as digits as its factorization.

47557157 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 171500, while the sum is 41.

The square root of 47557157 is about 6896.1697339900. The cubic root of 47557157 is about 362.3030260839.

The spelling of 47557157 in words is "forty-seven million, five hundred fifty-seven thousand, one hundred fifty-seven".