545020400 has 30 divisors (see below), whose sum is σ = 1309412472. Its totient is φ = 218008000.

The previous prime is 545020379. The next prime is 545020433. The reversal of 545020400 is 4020545.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 680876 + ... + 681675.

Almost surely, 2^545020400 is an apocalyptic number.

545020400 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

545020400 is an abundant number, since it is smaller than the sum of its proper divisors (764392072).

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

545020400 is a wasteful number, since it uses less digits than its factorization.

545020400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1362569 (or 1362558 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 20.

The square root of 545020400 is about 23345.6719757646. The cubic root of 545020400 is about 816.8411085550.

Adding to 545020400 its reverse (4020545), we get a palindrome (549040945).

The spelling of 545020400 in words is "five hundred forty-five million, twenty thousand, four hundred".