2112551545 has 24 divisors (see below), whose sum is σ = 2839757400. Its totient is φ = 1506226176.

The previous prime is 2112551533. The next prime is 2112551549. The reversal of 2112551545 is 5451552112.

It can be written as a sum of positive squares in 12 ways, for example, as 1729644921 + 382906624 = 41589^2 + 19568^2 .

It is not a de Polignac number, because 2112551545 - 2⁷ = 2112551417 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2112551549) 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, 18600 + ... + 67609.

It is an arithmetic number, because the mean of its divisors is an integer number (118323225).

Almost surely, 2^2112551545 is an apocalyptic number.

It is an amenable number.

2112551545 is a deficient number, since it is larger than the sum of its proper divisors (727205855).

2112551545 is a wasteful number, since it uses less digits than its factorization.

2112551545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86269 (or 86256 counting only the distinct ones).

The product of its digits is 10000, while the sum is 31.

The square root of 2112551545 is about 45962.5015093826. The cubic root of 2112551545 is about 1283.1254078535.

The spelling of 2112551545 in words is "two billion, one hundred twelve million, five hundred fifty-one thousand, five hundred forty-five".