47512281 has 8 divisors (see below), whose sum is σ = 63533664. Its totient is φ = 31582880.

The previous prime is 47512279. The next prime is 47512321. The reversal of 47512281 is 18221574.

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 47512281 - 2¹ = 47512279 is a prime.

It is a super-2 number, since 2×47512281² = 4514833691645922, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (47512261) 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, 21780 + ... + 23861.

It is an arithmetic number, because the mean of its divisors is an integer number (7941708).

Almost surely, 2^47512281 is an apocalyptic number.

It is an amenable number.

47512281 is a deficient number, since it is larger than the sum of its proper divisors (16021383).

47512281 is a wasteful number, since it uses less digits than its factorization.

47512281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45991.

The product of its digits is 4480, while the sum is 30.

The square root of 47512281 is about 6892.9152758466. The cubic root of 47512281 is about 362.1890311332.

The spelling of 47512281 in words is "forty-seven million, five hundred twelve thousand, two hundred eighty-one".