545340400 has 60 divisors (see below), whose sum is σ = 1429299144. Its totient is φ = 198304000.

The previous prime is 545340377. The next prime is 545340409. The reversal of 545340400 is 4043545.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (545340409) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 57571 + ... + 66370.

Almost surely, 2^545340400 is an apocalyptic number.

545340400 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

545340400 is an abundant number, since it is smaller than the sum of its proper divisors (883958744).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

545340400 is a wasteful number, since it uses less digits than its factorization.

545340400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123970 (or 123959 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 25.

The square root of 545340400 is about 23352.5244887999. The cubic root of 545340400 is about 817.0009423365. Note that the first 3 decimals are identical.

Adding to 545340400 its reverse (4043545), we get a palindrome (549383945).

The spelling of 545340400 in words is "five hundred forty-five million, three hundred forty thousand, four hundred".