2145524200 has 24 divisors (see below), whose sum is σ = 4988344230. Its totient is φ = 858209600.

The previous prime is 2145524191. The next prime is 2145524209. The reversal of 2145524200 is 24255412.

It is an interprime number because it is at equal distance from previous prime (2145524191) and next prime (2145524209).

It can be written as a sum of positive squares in 3 ways, for example, as 1149616836 + 995907364 = 33906^2 + 31558^2 .

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 (2145524209) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5363611 + ... + 5364010.

Almost surely, 2^2145524200 is an apocalyptic number.

2145524200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2145524200 is an abundant number, since it is smaller than the sum of its proper divisors (2842820030).

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

2145524200 is a wasteful number, since it uses less digits than its factorization.

2145524200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10727637 (or 10727628 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 25.

The square root of 2145524200 is about 46319.8035401706. The cubic root of 2145524200 is about 1289.7666384756.

Adding to 2145524200 its reverse (24255412), we get a palindrome (2169779612).

The spelling of 2145524200 in words is "two billion, one hundred forty-five million, five hundred twenty-four thousand, two hundred".