47117540 has 24 divisors (see below), whose sum is σ = 104767992. Its totient is φ = 17738240.

The previous prime is 47117537. The next prime is 47117561. The reversal of 47117540 is 4571174.

It can be written as a sum of positive squares in 4 ways, for example, as 21977344 + 25140196 = 4688^2 + 5014^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68951 + ... + 69630.

It is an arithmetic number, because the mean of its divisors is an integer number (4365333).

Almost surely, 2^47117540 is an apocalyptic number.

It is an amenable number.

47117540 is an abundant number, since it is smaller than the sum of its proper divisors (57650452).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

47117540 is a wasteful number, since it uses less digits than its factorization.

47117540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138607 (or 138605 counting only the distinct ones).

The product of its (nonzero) digits is 3920, while the sum is 29.

The square root of 47117540 is about 6864.2217330153. The cubic root of 47117540 is about 361.1831954629.

The spelling of 47117540 in words is "forty-seven million, one hundred seventeen thousand, five hundred forty".