2521740858 has 64 divisors (see below), whose sum is σ = 6219037440. Its totient is φ = 663823872.

The previous prime is 2521740853. The next prime is 2521740899. The reversal of 2521740858 is 8580471252.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (2521740853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 306616 + ... + 314732.

It is an arithmetic number, because the mean of its divisors is an integer number (97172460).

Almost surely, 2^2521740858 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2521740858, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3109518720).

2521740858 is an abundant number, since it is smaller than the sum of its proper divisors (3697296582).

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

2521740858 is a wasteful number, since it uses less digits than its factorization.

2521740858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8711.

The product of its (nonzero) digits is 179200, while the sum is 42.

The square root of 2521740858 is about 50216.9379592185. The cubic root of 2521740858 is about 1361.1317097429.

The spelling of 2521740858 in words is "two billion, five hundred twenty-one million, seven hundred forty thousand, eight hundred fifty-eight".