47477545 has 4 divisors (see below), whose sum is σ = 56973060. Its totient is φ = 37982032.

The previous prime is 47477537. The next prime is 47477557. The reversal of 47477545 is 54577474.

47477545 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 5331481 + 42146064 = 2309^2 + 6492^2 .

It is a cyclic number.

It is not a de Polignac number, because 47477545 - 2³ = 47477537 is a prime.

It is an unprimeable number.

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, 4747750 + ... + 4747759.

It is an arithmetic number, because the mean of its divisors is an integer number (14243265).

Almost surely, 2^47477545 is an apocalyptic number.

It is an amenable number.

47477545 is a deficient number, since it is larger than the sum of its proper divisors (9495515).

47477545 is an equidigital number, since it uses as much as digits as its factorization.

47477545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9495514.

The product of its digits is 548800, while the sum is 43.

The square root of 47477545 is about 6890.3951265512. The cubic root of 47477545 is about 362.1007447285.

The spelling of 47477545 in words is "forty-seven million, four hundred seventy-seven thousand, five hundred forty-five".