544021157 has 2 divisors, whose sum is σ = 544021158. Its totient is φ = 544021156.

The previous prime is 544021147. The next prime is 544021183. The reversal of 544021157 is 751120445.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 278689636 + 265331521 = 16694^2 + 16289^2 .

It is a cyclic number.

It is not a de Polignac number, because 544021157 - 2⁴ = 544021141 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (544021147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 272010578 + 272010579.

It is an arithmetic number, because the mean of its divisors is an integer number (272010579).

Almost surely, 2^544021157 is an apocalyptic number.

It is an amenable number.

544021157 is a deficient number, since it is larger than the sum of its proper divisors (1).

544021157 is an equidigital number, since it uses as much as digits as its factorization.

544021157 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5600, while the sum is 29.

The square root of 544021157 is about 23324.2611244172. The cubic root of 544021157 is about 816.3416030376.

The spelling of 544021157 in words is "five hundred forty-four million, twenty-one thousand, one hundred fifty-seven".