2111454520 has 32 divisors (see below), whose sum is σ = 5429455200. Its totient is φ = 723927168.

The previous prime is 2111454517. The next prime is 2111454529. The reversal of 2111454520 is 254541112.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2111454529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3770175 + ... + 3770734.

It is an arithmetic number, because the mean of its divisors is an integer number (169670475).

Almost surely, 2^2111454520 is an apocalyptic number.

2111454520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2111454520 is an abundant number, since it is smaller than the sum of its proper divisors (3318000680).

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

2111454520 is a wasteful number, since it uses less digits than its factorization.

2111454520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7540927 (or 7540923 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 25.

The square root of 2111454520 is about 45950.5660465679. The cubic root of 2111454520 is about 1282.9032650489.

Adding to 2111454520 its reverse (254541112), we get a palindrome (2365995632).

The spelling of 2111454520 in words is "two billion, one hundred eleven million, four hundred fifty-four thousand, five hundred twenty".