47045623 has 2 divisors, whose sum is σ = 47045624. Its totient is φ = 47045622.

The previous prime is 47045617. The next prime is 47045639. The reversal of 47045623 is 32654074.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47045623 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47045023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23522811 + 23522812.

It is an arithmetic number, because the mean of its divisors is an integer number (23522812).

Almost surely, 2^47045623 is an apocalyptic number.

47045623 is a deficient number, since it is larger than the sum of its proper divisors (1).

47045623 is an equidigital number, since it uses as much as digits as its factorization.

47045623 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20160, while the sum is 31.

The square root of 47045623 is about 6858.9811925679. The cubic root of 47045623 is about 360.9993400898. Note that the first 3 decimals are identical.

Adding to 47045623 its reverse (32654074), we get a palindrome (79699697).

The spelling of 47045623 in words is "forty-seven million, forty-five thousand, six hundred twenty-three".