47616881 has 8 divisors (see below), whose sum is σ = 54296424. Its totient is φ = 41368320.

The previous prime is 47616871. The next prime is 47616889. The reversal of 47616881 is 18861674.

It can be written as a sum of positive squares in 4 ways, for example, as 2512225 + 45104656 = 1585^2 + 6716^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47616881 is a prime.

It is a super-2 number, since 2×47616881² = 4534734712336322, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (47616889) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 107510 + ... + 107951.

It is an arithmetic number, because the mean of its divisors is an integer number (6787053).

Almost surely, 2^47616881 is an apocalyptic number.

It is an amenable number.

47616881 is a deficient number, since it is larger than the sum of its proper divisors (6679543).

47616881 is a wasteful number, since it uses less digits than its factorization.

47616881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215491.

The product of its digits is 64512, while the sum is 41.

The square root of 47616881 is about 6900.4986051734. The cubic root of 47616881 is about 362.4546270599.

The spelling of 47616881 in words is "forty-seven million, six hundred sixteen thousand, eight hundred eighty-one".