47115545 has 4 divisors (see below), whose sum is σ = 56538660. Its totient is φ = 37692432.

The previous prime is 47115527. The next prime is 47115547. The reversal of 47115545 is 54551174.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54551174 = 2 ⋅27275587.

It can be written as a sum of positive squares in 2 ways, for example, as 30558784 + 16556761 = 5528^2 + 4069^2 .

It is a cyclic number.

It is not a de Polignac number, because 47115545 - 2¹⁶ = 47050009 is a prime.

It is not an unprimeable number, because it can be changed into a prime (47115547) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4711550 + ... + 4711559.

It is an arithmetic number, because the mean of its divisors is an integer number (14134665).

Almost surely, 2^47115545 is an apocalyptic number.

It is an amenable number.

47115545 is a deficient number, since it is larger than the sum of its proper divisors (9423115).

47115545 is an equidigital number, since it uses as much as digits as its factorization.

47115545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9423114.

The product of its digits is 14000, while the sum is 32.

The square root of 47115545 is about 6864.0764127448. The cubic root of 47115545 is about 361.1780977813.

The spelling of 47115545 in words is "forty-seven million, one hundred fifteen thousand, five hundred forty-five".