2154315520 has 72 divisors (see below), whose sum is σ = 5897463264. Its totient is φ = 738619392.

The previous prime is 2154315511. The next prime is 2154315563. The reversal of 2154315520 is 255134512.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

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, 111259 + ... + 129178.

It is an arithmetic number, because the mean of its divisors is an integer number (81909212).

Almost surely, 2^2154315520 is an apocalyptic number.

2154315520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2154315520 is an abundant number, since it is smaller than the sum of its proper divisors (3743147744).

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

2154315520 is an equidigital number, since it uses as much as digits as its factorization.

2154315520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240465 (or 240451 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 28.

The square root of 2154315520 is about 46414.6045981219. The cubic root of 2154315520 is about 1291.5258510567.

The spelling of 2154315520 in words is "two billion, one hundred fifty-four million, three hundred fifteen thousand, five hundred twenty".