47424557 has 4 divisors (see below), whose sum is σ = 47474076. Its totient is φ = 47375040.

The previous prime is 47424529. The next prime is 47424583. The reversal of 47424557 is 75542474.

47424557 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 20529961 + 26894596 = 4531^2 + 5186^2 .

It is a cyclic number.

It is not a de Polignac number, because 47424557 - 2¹⁰ = 47423533 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 47424557.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47424757) 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, 23294 + ... + 25247.

It is an arithmetic number, because the mean of its divisors is an integer number (11868519).

Almost surely, 2^47424557 is an apocalyptic number.

It is an amenable number.

47424557 is a deficient number, since it is larger than the sum of its proper divisors (49519).

47424557 is an equidigital number, since it uses as much as digits as its factorization.

47424557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49518.

The product of its digits is 156800, while the sum is 38.

The square root of 47424557 is about 6886.5489906048. The cubic root of 47424557 is about 361.9659853269.

The spelling of 47424557 in words is "forty-seven million, four hundred twenty-four thousand, five hundred fifty-seven".