2145542552 has 16 divisors (see below), whose sum is σ = 4091077800. Its totient is φ = 1054588480.

The previous prime is 2145542551. The next prime is 2145542573. The reversal of 2145542552 is 2552455412.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2145542551) by changing a digit.

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, 2272349 + ... + 2273292.

Almost surely, 2^2145542552 is an apocalyptic number.

It is an amenable number.

2145542552 is a deficient number, since it is larger than the sum of its proper divisors (1945535248).

2145542552 is a wasteful number, since it uses less digits than its factorization.

2145542552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4545706 (or 4545702 counting only the distinct ones).

The product of its digits is 80000, while the sum is 35.

The square root of 2145542552 is about 46320.0016407599. The cubic root of 2145542552 is about 1289.7703158566.

Adding to 2145542552 its reverse (2552455412), we get a palindrome (4697997964).

The spelling of 2145542552 in words is "two billion, one hundred forty-five million, five hundred forty-two thousand, five hundred fifty-two".