47420165 has 16 divisors (see below), whose sum is σ = 61650288. Its totient is φ = 34807296.

The previous prime is 47420161. The next prime is 47420167. The reversal of 47420165 is 56102474.

It can be written as a sum of positive squares in 8 ways, for example, as 1803649 + 45616516 = 1343^2 + 6754^2 .

It is a cyclic number.

It is not a de Polignac number, because 47420165 - 2² = 47420161 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47420161) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9137 + ... + 13353.

It is an arithmetic number, because the mean of its divisors is an integer number (3853143).

Almost surely, 2^47420165 is an apocalyptic number.

It is an amenable number.

47420165 is a deficient number, since it is larger than the sum of its proper divisors (14230123).

47420165 is a wasteful number, since it uses less digits than its factorization.

47420165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4408.

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 47420165 is about 6886.2301007155. The cubic root of 47420165 is about 361.9548110620.

The spelling of 47420165 in words is "forty-seven million, four hundred twenty thousand, one hundred sixty-five".