545729381 has 8 divisors (see below), whose sum is σ = 574862400. Its totient is φ = 516637440.

The previous prime is 545729341. The next prime is 545729389. The reversal of 545729381 is 183927545.

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 545729381 - 2¹⁴ = 545712997 is a prime.

It is a super-2 number, since 2×545729381² = 595641114573286322, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (545729389) 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 in 7 ways as a sum of consecutive naturals, for example, 19205 + ... + 38213.

It is an arithmetic number, because the mean of its divisors is an integer number (71857800).

Almost surely, 2^545729381 is an apocalyptic number.

It is an amenable number.

545729381 is a deficient number, since it is larger than the sum of its proper divisors (29133019).

545729381 is a wasteful number, since it uses less digits than its factorization.

545729381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20539.

The product of its digits is 302400, while the sum is 44.

The square root of 545729381 is about 23360.8514613659. The cubic root of 545729381 is about 817.1951466132.

The spelling of 545729381 in words is "five hundred forty-five million, seven hundred twenty-nine thousand, three hundred eighty-one".