545349923 has 16 divisors (see below), whose sum is σ = 573361152. Its totient is φ = 518076000.

The previous prime is 545349899. The next prime is 545349947. The reversal of 545349923 is 329943545.

It is an interprime number because it is at equal distance from previous prime (545349899) and next prime (545349947).

It is a cyclic number.

It is not a de Polignac number, because 545349923 - 2¹⁴ = 545333539 is a prime.

It is a super-2 number, since 2×545349923² = 594813077032211858, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (545349823) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 465128 + ... + 466298.

It is an arithmetic number, because the mean of its divisors is an integer number (35835072).

Almost surely, 2^545349923 is an apocalyptic number.

545349923 is a deficient number, since it is larger than the sum of its proper divisors (28011229).

545349923 is a wasteful number, since it uses less digits than its factorization.

545349923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1466.

The product of its digits is 583200, while the sum is 44.

The square root of 545349923 is about 23352.7283844950. The cubic root of 545349923 is about 817.0056979318.

The spelling of 545349923 in words is "five hundred forty-five million, three hundred forty-nine thousand, nine hundred twenty-three".