545402500 has 120 divisors (see below), whose sum is σ = 1297778328. Its totient is φ = 199680000.

The previous prime is 545402479. The next prime is 545402503. The reversal of 545402500 is 5204545.

It can be written as a sum of positive squares in 20 ways, for example, as 471063616 + 74338884 = 21704^2 + 8622^2 .

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

It is not an unprimeable number, because it can be changed into a prime (545402503) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1742344 + ... + 1742656.

Almost surely, 2^545402500 is an apocalyptic number.

545402500 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 545402500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (648889164).

545402500 is an abundant number, since it is smaller than the sum of its proper divisors (752375828).

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

545402500 is a wasteful number, since it uses less digits than its factorization.

545402500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 395 (or 378 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 25.

The square root of 545402500 is about 23353.8540716516. The cubic root of 545402500 is about 817.0319528349.

The spelling of 545402500 in words is "five hundred forty-five million, four hundred two thousand, five hundred".