47661081 has 16 divisors (see below), whose sum is σ = 72463104. Its totient is φ = 27604224.

The previous prime is 47661079. The next prime is 47661091. The reversal of 47661081 is 18016674.

It is a happy number.

It is not a de Polignac number, because 47661081 - 2¹ = 47661079 is a prime.

It is a super-2 number, since 2×47661081² = 4543157284177122, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (47661011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35281 + ... + 36606.

It is an arithmetic number, because the mean of its divisors is an integer number (4528944).

Almost surely, 2^47661081 is an apocalyptic number.

It is an amenable number.

47661081 is a deficient number, since it is larger than the sum of its proper divisors (24802023).

47661081 is a wasteful number, since it uses less digits than its factorization.

47661081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71920.

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 47661081 is about 6903.7005294262. The cubic root of 47661081 is about 362.5667409417.

The spelling of 47661081 in words is "forty-seven million, six hundred sixty-one thousand, eighty-one".