2045531400 has 96 divisors (see below), whose sum is σ = 6917637600. Its totient is φ = 495884800.

The previous prime is 2045531353. The next prime is 2045531401. The reversal of 2045531400 is 41355402.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (2045531401) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 148365 + ... + 161564.

It is an arithmetic number, because the mean of its divisors is an integer number (72058725).

Almost surely, 2^2045531400 is an apocalyptic number.

2045531400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2045531400 is an abundant number, since it is smaller than the sum of its proper divisors (4872106200).

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

2045531400 is a wasteful number, since it uses less digits than its factorization.

2045531400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 309959 (or 309950 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 2045531400 is about 45227.5513376526. The cubic root of 2045531400 is about 1269.4103944689.

Adding to 2045531400 its reverse (41355402), we get a palindrome (2086886802).

The spelling of 2045531400 in words is "two billion, forty-five million, five hundred thirty-one thousand, four hundred".