47137705 has 4 divisors (see below), whose sum is σ = 56565252. Its totient is φ = 37710160.

The previous prime is 47137703. The next prime is 47137709. The reversal of 47137705 is 50773174.

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 7862416 + 39275289 = 2804^2 + 6267^2 .

It is not a de Polignac number, because 47137705 - 2¹ = 47137703 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47137703) 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, 4713766 + ... + 4713775.

It is an arithmetic number, because the mean of its divisors is an integer number (14141313).

Almost surely, 2^47137705 is an apocalyptic number.

It is an amenable number.

47137705 is a deficient number, since it is larger than the sum of its proper divisors (9427547).

47137705 is an equidigital number, since it uses as much as digits as its factorization.

47137705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9427546.

The product of its (nonzero) digits is 20580, while the sum is 34.

The square root of 47137705 is about 6865.6904241307. The cubic root of 47137705 is about 361.2347135767.

The spelling of 47137705 in words is "forty-seven million, one hundred thirty-seven thousand, seven hundred five".