2145510544 has 20 divisors (see below), whose sum is σ = 4225074940. Its totient is φ = 1055168640.

The previous prime is 2145510511. The next prime is 2145510559. The reversal of 2145510544 is 4450155412.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 405619600 + 1739890944 = 20140^2 + 41712^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1098159 + ... + 1100110.

It is an arithmetic number, because the mean of its divisors is an integer number (211253747).

Almost surely, 2^2145510544 is an apocalyptic number.

It is an amenable number.

2145510544 is a deficient number, since it is larger than the sum of its proper divisors (2079564396).

2145510544 is a wasteful number, since it uses less digits than its factorization.

2145510544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2198338 (or 2198332 counting only the distinct ones).

The product of its (nonzero) digits is 16000, while the sum is 31.

The square root of 2145510544 is about 46319.6561299844. The cubic root of 2145510544 is about 1289.7639020673.

Adding to 2145510544 its reverse (4450155412), we get a palindrome (6595665956).

The spelling of 2145510544 in words is "two billion, one hundred forty-five million, five hundred ten thousand, five hundred forty-four".