47512881 has 12 divisors (see below), whose sum is σ = 73909108. Its totient is φ = 29238624.

The previous prime is 47512879. The next prime is 47512903. The reversal of 47512881 is 18821574.

It can be written as a sum of positive squares in 2 ways, for example, as 31640625 + 15872256 = 5625^2 + 3984^2 .

It is not a de Polignac number, because 47512881 - 2¹ = 47512879 is a prime.

It is a super-2 number, since 2×47512881² = 4514947721840322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47512781) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 202930 + ... + 203163.

Almost surely, 2^47512881 is an apocalyptic number.

It is an amenable number.

47512881 is a deficient number, since it is larger than the sum of its proper divisors (26396227).

47512881 is a wasteful number, since it uses less digits than its factorization.

47512881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 406112 (or 406109 counting only the distinct ones).

The product of its digits is 17920, while the sum is 36.

The square root of 47512881 is about 6892.9587986582. The cubic root of 47512881 is about 362.1905557390.

The spelling of 47512881 in words is "forty-seven million, five hundred twelve thousand, eight hundred eighty-one".