47155039 has 4 divisors (see below), whose sum is σ = 47723256. Its totient is φ = 46586824.

The previous prime is 47155027. The next prime is 47155049. The reversal of 47155039 is 93055174.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47155039 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 47154995 and 47155013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47155019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 283984 + ... + 284149.

It is an arithmetic number, because the mean of its divisors is an integer number (11930814).

Almost surely, 2^47155039 is an apocalyptic number.

47155039 is a deficient number, since it is larger than the sum of its proper divisors (568217).

47155039 is an equidigital number, since it uses as much as digits as its factorization.

47155039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 568216.

The product of its (nonzero) digits is 18900, while the sum is 34.

The square root of 47155039 is about 6866.9526720373. The cubic root of 47155039 is about 361.2789872295.

The spelling of 47155039 in words is "forty-seven million, one hundred fifty-five thousand, thirty-nine".