544809121 has 2 divisors, whose sum is σ = 544809122. Its totient is φ = 544809120.

The previous prime is 544809077. The next prime is 544809131. The reversal of 544809121 is 121908445.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 385140625 + 159668496 = 19625^2 + 12636^2 .

It is a cyclic number.

It is not a de Polignac number, because 544809121 - 2¹¹ = 544807073 is a prime.

It is not a weakly prime, because it can be changed into another prime (544809131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 272404560 + 272404561.

It is an arithmetic number, because the mean of its divisors is an integer number (272404561).

Almost surely, 2^544809121 is an apocalyptic number.

It is an amenable number.

544809121 is a deficient number, since it is larger than the sum of its proper divisors (1).

544809121 is an equidigital number, since it uses as much as digits as its factorization.

544809121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11520, while the sum is 34.

The square root of 544809121 is about 23341.1465228253. The cubic root of 544809121 is about 816.7355445077.

The spelling of 544809121 in words is "five hundred forty-four million, eight hundred nine thousand, one hundred twenty-one".