544857421 has 2 divisors, whose sum is σ = 544857422. Its totient is φ = 544857420.

The previous prime is 544857403. The next prime is 544857451. The reversal of 544857421 is 124758445.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 444577225 + 100280196 = 21085^2 + 10014^2 .

It is a cyclic number.

It is not a de Polignac number, because 544857421 - 2¹⁷ = 544726349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (544857451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 272428710 + 272428711.

It is an arithmetic number, because the mean of its divisors is an integer number (272428711).

Almost surely, 2^544857421 is an apocalyptic number.

It is an amenable number.

544857421 is a deficient number, since it is larger than the sum of its proper divisors (1).

544857421 is an equidigital number, since it uses as much as digits as its factorization.

544857421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 179200, while the sum is 40.

The square root of 544857421 is about 23342.1811534398. The cubic root of 544857421 is about 816.7596796647.

The spelling of 544857421 in words is "five hundred forty-four million, eight hundred fifty-seven thousand, four hundred twenty-one".