47451823 has 2 divisors, whose sum is σ = 47451824. Its totient is φ = 47451822.

The previous prime is 47451809. The next prime is 47451827. The reversal of 47451823 is 32815474.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 47451823 - 2⁹ = 47451311 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47451827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23725911 + 23725912.

It is an arithmetic number, because the mean of its divisors is an integer number (23725912).

Almost surely, 2^47451823 is an apocalyptic number.

47451823 is a deficient number, since it is larger than the sum of its proper divisors (1).

47451823 is an equidigital number, since it uses as much as digits as its factorization.

47451823 is an evil number, because the sum of its binary digits is even.

The product of its digits is 26880, while the sum is 34.

The square root of 47451823 is about 6888.5283624298. The cubic root of 47451823 is about 362.0353409124.

The spelling of 47451823 in words is "forty-seven million, four hundred fifty-one thousand, eight hundred twenty-three".