47288281 has 8 divisors (see below), whose sum is σ = 48084840. Its totient is φ = 46497792.

The previous prime is 47288273. The next prime is 47288287. The reversal of 47288281 is 18288274.

It can be written as a sum of positive squares in 4 ways, for example, as 5569600 + 41718681 = 2360^2 + 6459^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 47288281 - 2³ = 47288273 is a prime.

It is a super-2 number, since 2×47288281² = 4472363039869922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47288287) 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, 15801 + ... + 18553.

It is an arithmetic number, because the mean of its divisors is an integer number (6010605).

Almost surely, 2^47288281 is an apocalyptic number.

It is an amenable number.

47288281 is a deficient number, since it is larger than the sum of its proper divisors (796559).

47288281 is a wasteful number, since it uses less digits than its factorization.

47288281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3035.

The product of its digits is 57344, while the sum is 40.

The square root of 47288281 is about 6876.6475116877. The cubic root of 47288281 is about 361.6189457118.

The spelling of 47288281 in words is "forty-seven million, two hundred eighty-eight thousand, two hundred eighty-one".