2521955520 has 896 divisors, whose sum is σ = 11119104000. Its totient is φ = 536481792.

The previous prime is 2521955503. The next prime is 2521955533. The reversal of 2521955520 is 255591252.

2521955520 is a `hidden beast` number, since 25 + 21 + 95 + 5 + 520 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 68160942 + ... + 68160978.

Almost surely, 2^2521955520 is an apocalyptic number.

2521955520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2521955520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5559552000).

2521955520 is an abundant number, since it is smaller than the sum of its proper divisors (8597148480).

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

2521955520 is a wasteful number, since it uses less digits than its factorization.

2521955520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107 (or 77 counting only the distinct ones).

The product of its (nonzero) digits is 45000, while the sum is 36.

The square root of 2521955520 is about 50219.0752603032. The cubic root of 2521955520 is about 1361.1703305451.

The spelling of 2521955520 in words is "two billion, five hundred twenty-one million, nine hundred fifty-five thousand, five hundred twenty".