47645123 has 2 divisors, whose sum is σ = 47645124. Its totient is φ = 47645122.

The previous prime is 47645119. The next prime is 47645149. The reversal of 47645123 is 32154674.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 47645123 - 2² = 47645119 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 47645123.

It is not a weakly prime, because it can be changed into another prime (47645153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23822561 + 23822562.

It is an arithmetic number, because the mean of its divisors is an integer number (23822562).

Almost surely, 2^47645123 is an apocalyptic number.

47645123 is a deficient number, since it is larger than the sum of its proper divisors (1).

47645123 is an equidigital number, since it uses as much as digits as its factorization.

47645123 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20160, while the sum is 32.

The square root of 47645123 is about 6902.5446756975. The cubic root of 47645123 is about 362.5262712629.

Adding to 47645123 its reverse (32154674), we get a palindrome (79799797).

The spelling of 47645123 in words is "forty-seven million, six hundred forty-five thousand, one hundred twenty-three".