545543503 has 4 divisors (see below), whose sum is σ = 560287960. Its totient is φ = 530799048.

The previous prime is 545543477. The next prime is 545543507. The reversal of 545543503 is 305345545.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 305345545 = 5 ⋅61069109.

It is a cyclic number.

It is not a de Polignac number, because 545543503 - 2¹³ = 545535311 is a prime.

It is a super-2 number, since 2×545543503² = 595235427331022018, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (545543507) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7372173 + ... + 7372246.

It is an arithmetic number, because the mean of its divisors is an integer number (140071990).

Almost surely, 2^545543503 is an apocalyptic number.

545543503 is a deficient number, since it is larger than the sum of its proper divisors (14744457).

545543503 is a wasteful number, since it uses less digits than its factorization.

545543503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14744456.

The product of its (nonzero) digits is 90000, while the sum is 34.

The square root of 545543503 is about 23356.8727144710. The cubic root of 545543503 is about 817.1023559042.

The spelling of 545543503 in words is "five hundred forty-five million, five hundred forty-three thousand, five hundred three".