2521871748 has 144 divisors (see below), whose sum is σ = 7345578240. Its totient is φ = 721483200.

The previous prime is 2521871717. The next prime is 2521871773. The reversal of 2521871748 is 8471781252.

2521871748 is a `hidden beast` number, since 2 + 521 + 87 + 1 + 7 + 48 = 666.

It is a super-2 number, since 2×2521871748² = 12719674226721151008, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4295911 + ... + 4296497.

It is an arithmetic number, because the mean of its divisors is an integer number (51010960).

Almost surely, 2^2521871748 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2521871748, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3672789120).

2521871748 is an abundant number, since it is smaller than the sum of its proper divisors (4823706492).

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

2521871748 is a wasteful number, since it uses less digits than its factorization.

2521871748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1198 (or 1193 counting only the distinct ones).

The product of its digits is 250880, while the sum is 45.

The square root of 2521871748 is about 50218.2411878393. The cubic root of 2521871748 is about 1361.1552590100.

The spelling of 2521871748 in words is "two billion, five hundred twenty-one million, eight hundred seventy-one thousand, seven hundred forty-eight".