545400203 has 4 divisors (see below), whose sum is σ = 553081968. Its totient is φ = 537718440.

The previous prime is 545400197. The next prime is 545400209. The reversal of 545400203 is 302004545.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (545400197) and next prime (545400209).

It is a cyclic number.

It is not a de Polignac number, because 545400203 - 2²⁰ = 544351627 is a prime.

It is a super-2 number, since 2×545400203² = 594922762864882418, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (545400209) 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, 3840776 + ... + 3840917.

It is an arithmetic number, because the mean of its divisors is an integer number (138270492).

Almost surely, 2^545400203 is an apocalyptic number.

545400203 is a deficient number, since it is larger than the sum of its proper divisors (7681765).

545400203 is an equidigital number, since it uses as much as digits as its factorization.

545400203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7681764.

The product of its (nonzero) digits is 2400, while the sum is 23.

The square root of 545400203 is about 23353.8048934215. The cubic root of 545400203 is about 817.0308058380.

Adding to 545400203 its reverse (302004545), we get a palindrome (847404748).

The spelling of 545400203 in words is "five hundred forty-five million, four hundred thousand, two hundred three".