544043261 has 4 divisors (see below), whose sum is σ = 546862332. Its totient is φ = 541224192.

The previous prime is 544043243. The next prime is 544043263. The reversal of 544043261 is 162340445.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 303979225 + 240064036 = 17435^2 + 15494^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-544043261 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (544043263) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1409246 + ... + 1409631.

It is an arithmetic number, because the mean of its divisors is an integer number (136715583).

Almost surely, 2^544043261 is an apocalyptic number.

It is an amenable number.

544043261 is a deficient number, since it is larger than the sum of its proper divisors (2819071).

544043261 is a wasteful number, since it uses less digits than its factorization.

544043261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2819070.

The product of its (nonzero) digits is 11520, while the sum is 29.

The square root of 544043261 is about 23324.7349609808. The cubic root of 544043261 is about 816.3526590846.

The spelling of 544043261 in words is "five hundred forty-four million, forty-three thousand, two hundred sixty-one".