545894221 has 8 divisors (see below), whose sum is σ = 571442688. Its totient is φ = 520842000.

The previous prime is 545894183. The next prime is 545894233. The reversal of 545894221 is 122498545.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 545894221 - 2¹⁷ = 545763149 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 (545894621) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 121810 + ... + 126211.

It is an arithmetic number, because the mean of its divisors is an integer number (71430336).

Almost surely, 2^545894221 is an apocalyptic number.

It is an amenable number.

545894221 is a deficient number, since it is larger than the sum of its proper divisors (25548467).

545894221 is a wasteful number, since it uses less digits than its factorization.

545894221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248123.

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

The square root of 545894221 is about 23364.3793198107. The cubic root of 545894221 is about 817.2774174798.

The spelling of 545894221 in words is "five hundred forty-five million, eight hundred ninety-four thousand, two hundred twenty-one".