2121541552 has 40 divisors (see below), whose sum is σ = 4465901664. Its totient is φ = 970497024.

The previous prime is 2121541523. The next prime is 2121541553. The reversal of 2121541552 is 2551451212.

It is a self number, because there is not a number n which added to its sum of digits gives 2121541552.

It is not an unprimeable number, because it can be changed into a prime (2121541553) 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 7 ways as a sum of consecutive naturals, for example, 21628 + ... + 68635.

Almost surely, 2^2121541552 is an apocalyptic number.

It is an amenable number.

2121541552 is an abundant number, since it is smaller than the sum of its proper divisors (2344360112).

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

2121541552 is a wasteful number, since it uses less digits than its factorization.

2121541552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90397 (or 90391 counting only the distinct ones).

The product of its digits is 4000, while the sum is 28.

The square root of 2121541552 is about 46060.1948758361. The cubic root of 2121541552 is about 1284.9429543632.

Adding to 2121541552 its reverse (2551451212), we get a palindrome (4672992764).

The spelling of 2121541552 in words is "two billion, one hundred twenty-one million, five hundred forty-one thousand, five hundred fifty-two".