54721423 has 2 divisors, whose sum is σ = 54721424. Its totient is φ = 54721422.

The previous prime is 54721421. The next prime is 54721427. The reversal of 54721423 is 32412745.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 54721423 - 2¹ = 54721421 is a prime.

Together with 54721421, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 54721391 and 54721400.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (54721421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27360711 + 27360712.

It is an arithmetic number, because the mean of its divisors is an integer number (27360712).

Almost surely, 2^54721423 is an apocalyptic number.

54721423 is a deficient number, since it is larger than the sum of its proper divisors (1).

54721423 is an equidigital number, since it uses as much as digits as its factorization.

54721423 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6720, while the sum is 28.

The square root of 54721423 is about 7397.3929867217. The cubic root of 54721423 is about 379.6520892298.

The spelling of 54721423 in words is "fifty-four million, seven hundred twenty-one thousand, four hundred twenty-three".