2516241557 has 4 divisors (see below), whose sum is σ = 2516831436. Its totient is φ = 2515651680.

The previous prime is 2516241551. The next prime is 2516241589. The reversal of 2516241557 is 7551426152.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 491331556 + 2024910001 = 22166^2 + 44999^2 .

It is a cyclic number.

It is not a de Polignac number, because 2516241557 - 2²⁸ = 2247806101 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2516241557.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2516241551) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 288494 + ... + 297087.

It is an arithmetic number, because the mean of its divisors is an integer number (629207859).

Almost surely, 2^2516241557 is an apocalyptic number.

It is an amenable number.

2516241557 is a deficient number, since it is larger than the sum of its proper divisors (589879).

2516241557 is an equidigital number, since it uses as much as digits as its factorization.

2516241557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 589878.

The product of its digits is 84000, while the sum is 38.

The square root of 2516241557 is about 50162.1526352289. The cubic root of 2516241557 is about 1360.1415576773.

The spelling of 2516241557 in words is "two billion, five hundred sixteen million, two hundred forty-one thousand, five hundred fifty-seven".