47647155 has 32 divisors (see below), whose sum is σ = 82851840. Its totient is φ = 23293440.

The previous prime is 47647151. The next prime is 47647181. The reversal of 47647155 is 55174674.

It is not a de Polignac number, because 47647155 - 2² = 47647151 is a prime.

It is not an unprimeable number, because it can be changed into a prime (47647151) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6139 + ... + 11531.

It is an arithmetic number, because the mean of its divisors is an integer number (2589120).

Almost surely, 2^47647155 is an apocalyptic number.

47647155 is a deficient number, since it is larger than the sum of its proper divisors (35204685).

47647155 is a wasteful number, since it uses less digits than its factorization.

47647155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5451.

The product of its digits is 117600, while the sum is 39.

The square root of 47647155 is about 6902.6918662215. The cubic root of 47647155 is about 362.5314249412.

The spelling of 47647155 in words is "forty-seven million, six hundred forty-seven thousand, one hundred fifty-five".