47681247 has 4 divisors (see below), whose sum is σ = 63575000. Its totient is φ = 31787496.

The previous prime is 47681239. The next prime is 47681251. The reversal of 47681247 is 74218674.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 47681247 - 2³ = 47681239 is a prime.

It is a super-3 number, since 3×47681247³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47681747) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7946872 + ... + 7946877.

It is an arithmetic number, because the mean of its divisors is an integer number (15893750).

Almost surely, 2^47681247 is an apocalyptic number.

47681247 is a deficient number, since it is larger than the sum of its proper divisors (15893753).

47681247 is a wasteful number, since it uses less digits than its factorization.

47681247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15893752.

The product of its digits is 75264, while the sum is 39.

The square root of 47681247 is about 6905.1608960255. The cubic root of 47681247 is about 362.6178692402.

The spelling of 47681247 in words is "forty-seven million, six hundred eighty-one thousand, two hundred forty-seven".