47927137 has 4 divisors (see below), whose sum is σ = 47957140. Its totient is φ = 47897136.

The previous prime is 47927107. The next prime is 47927141. The reversal of 47927137 is 73172974.

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

It can be written as a sum of positive squares in 2 ways, for example, as 19368801 + 28558336 = 4401^2 + 5344^2 .

It is a cyclic number.

It is not a de Polignac number, because 47927137 - 2¹¹ = 47925089 is a prime.

It is a super-2 number, since 2×47927137² = 4594020922033538, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 47927137.

It is not an unprimeable number, because it can be changed into a prime (47927107) 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, 12462 + ... + 15847.

It is an arithmetic number, because the mean of its divisors is an integer number (11989285).

Almost surely, 2^47927137 is an apocalyptic number.

It is an amenable number.

47927137 is a deficient number, since it is larger than the sum of its proper divisors (30003).

47927137 is a wasteful number, since it uses less digits than its factorization.

47927137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30002.

The product of its digits is 74088, while the sum is 40.

The square root of 47927137 is about 6922.9427991281. The cubic root of 47927137 is about 363.2401353606.

The spelling of 47927137 in words is "forty-seven million, nine hundred twenty-seven thousand, one hundred thirty-seven".