47355557 has 8 divisors (see below), whose sum is σ = 50509656. Its totient is φ = 44242432.

The previous prime is 47355499. The next prime is 47355559. The reversal of 47355557 is 75555374.

47355557 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 4 ways, for example, as 28398241 + 18957316 = 5329^2 + 4354^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 47355557 - 2¹⁶ = 47290021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47355559) 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 7 ways as a sum of consecutive naturals, for example, 7838 + ... + 12495.

It is an arithmetic number, because the mean of its divisors is an integer number (6313707).

Almost surely, 2^47355557 is an apocalyptic number.

It is an amenable number.

47355557 is a deficient number, since it is larger than the sum of its proper divisors (3154099).

47355557 is a wasteful number, since it uses less digits than its factorization.

47355557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20487.

The product of its digits is 367500, while the sum is 41.

The square root of 47355557 is about 6881.5374009011. The cubic root of 47355557 is about 361.7903535651.

The spelling of 47355557 in words is "forty-seven million, three hundred fifty-five thousand, five hundred fifty-seven".