545363281 has 32 divisors (see below), whose sum is σ = 623462400. Its totient is φ = 474211584.

The previous prime is 545363261. The next prime is 545363293. The reversal of 545363281 is 182363545.

It is a 2-Lehmer number, since φ(545363281) divides (545363281-1)².

It is a cyclic number.

It is a Carmichael number.

It is not a de Polignac number, because 545363281 - 2⁵ = 545363249 is a prime.

It is a super-2 number, since 2×545363281² = 594842216526169922, which contains 22 as substring.

It is a deceptive number, since it divides R_545363280.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 545363281.

It is not an unprimeable number, because it can be changed into a prime (545363261) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2740420 + ... + 2740618.

It is an arithmetic number, because the mean of its divisors is an integer number (19483200).

It is a Poulet number, since it divides 2^545363280-1.

Almost surely, 2^545363281 is an apocalyptic number.

It is an amenable number.

545363281 is a deficient number, since it is larger than the sum of its proper divisors (78099119).

545363281 is a wasteful number, since it uses less digits than its factorization.

545363281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 445.

The product of its digits is 86400, while the sum is 37.

The square root of 545363281 is about 23353.0143878686. The cubic root of 545363281 is about 817.0123685559.

The spelling of 545363281 in words is "five hundred forty-five million, three hundred sixty-three thousand, two hundred eighty-one".