47155505 has 8 divisors (see below), whose sum is σ = 56749032. Its totient is φ = 37616128.

The previous prime is 47155489. The next prime is 47155513. The reversal of 47155505 is 50555174.

47155505 = 175² + 176² + ... + 527².

47155505 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 602176 + 46553329 = 776^2 + 6823^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 47155505 - 2⁴ = 47155489 is a prime.

It is a Duffinian number.

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 7 ways as a sum of consecutive naturals, for example, 11594 + ... + 15123.

It is an arithmetic number, because the mean of its divisors is an integer number (7093629).

Almost surely, 2^47155505 is an apocalyptic number.

It is an amenable number.

47155505 is a deficient number, since it is larger than the sum of its proper divisors (9593527).

47155505 is a wasteful number, since it uses less digits than its factorization.

47155505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27075.

The product of its (nonzero) digits is 17500, while the sum is 32.

The square root of 47155505 is about 6866.9866025790. The cubic root of 47155505 is about 361.2801773141.

The spelling of 47155505 in words is "forty-seven million, one hundred fifty-five thousand, five hundred five".