544825921 has 4 divisors (see below), whose sum is σ = 545132592. Its totient is φ = 544519252.

The previous prime is 544825907. The next prime is 544825933. The reversal of 544825921 is 129528445.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 544825921 - 2⁵ = 544825889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (544825901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 150655 + ... + 154228.

It is an arithmetic number, because the mean of its divisors is an integer number (136283148).

Almost surely, 2^544825921 is an apocalyptic number.

It is an amenable number.

544825921 is a deficient number, since it is larger than the sum of its proper divisors (306671).

544825921 is a wasteful number, since it uses less digits than its factorization.

544825921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 306670.

The product of its digits is 115200, while the sum is 40.

The square root of 544825921 is about 23341.5063995450. The cubic root of 544825921 is about 816.7439395067.

The spelling of 544825921 in words is "five hundred forty-four million, eight hundred twenty-five thousand, nine hundred twenty-one".