47345637 has 4 divisors (see below), whose sum is σ = 63127520. Its totient is φ = 31563756.

The previous prime is 47345593. The next prime is 47345647. The reversal of 47345637 is 73654374.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 47345637 - 2⁷ = 47345509 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 47345595 and 47345604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47345647) 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, 7890937 + ... + 7890942.

It is an arithmetic number, because the mean of its divisors is an integer number (15781880).

Almost surely, 2^47345637 is an apocalyptic number.

It is an amenable number.

47345637 is a deficient number, since it is larger than the sum of its proper divisors (15781883).

47345637 is a wasteful number, since it uses less digits than its factorization.

47345637 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15781882.

The product of its digits is 211680, while the sum is 39.

The square root of 47345637 is about 6880.8165939807. The cubic root of 47345637 is about 361.7650892936.

The spelling of 47345637 in words is "forty-seven million, three hundred forty-five thousand, six hundred thirty-seven".