47812137 has 16 divisors (see below), whose sum is σ = 65998848. Its totient is φ = 30756240.

The previous prime is 47812133. The next prime is 47812169. The reversal of 47812137 is 73121874.

It is a happy number.

47812137 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 47812137 - 2² = 47812133 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 47812098 and 47812107.

It is not an unprimeable number, because it can be changed into a prime (47812133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48148 + ... + 49130.

It is an arithmetic number, because the mean of its divisors is an integer number (4124928).

Almost surely, 2^47812137 is an apocalyptic number.

It is an amenable number.

47812137 is a deficient number, since it is larger than the sum of its proper divisors (18186711).

47812137 is a wasteful number, since it uses less digits than its factorization.

47812137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1540.

The product of its digits is 9408, while the sum is 33.

The square root of 47812137 is about 6914.6320943344. The cubic root of 47812137 is about 362.9493740537.

The spelling of 47812137 in words is "forty-seven million, eight hundred twelve thousand, one hundred thirty-seven".