2154240520 has 32 divisors (see below), whose sum is σ = 5102150400. Its totient is φ = 816343488.

The previous prime is 2154240511. The next prime is 2154240547. The reversal of 2154240520 is 250424512.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1416504 + ... + 1418023.

It is an arithmetic number, because the mean of its divisors is an integer number (159442200).

Almost surely, 2^2154240520 is an apocalyptic number.

2154240520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2154240520 is an abundant number, since it is smaller than the sum of its proper divisors (2947909880).

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

2154240520 is a wasteful number, since it uses less digits than its factorization.

2154240520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2834557 (or 2834553 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 25.

The square root of 2154240520 is about 46413.7966557359. The cubic root of 2154240520 is about 1291.5108632238.

The spelling of 2154240520 in words is "two billion, one hundred fifty-four million, two hundred forty thousand, five hundred twenty".