2516398251 has 16 divisors (see below), whose sum is σ = 3378412800. Its totient is φ = 1666010528.

The previous prime is 2516398249. The next prime is 2516398277. The reversal of 2516398251 is 1528936152.

It is a cyclic number.

It is not a de Polignac number, because 2516398251 - 2¹ = 2516398249 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2516398051) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 854740 + ... + 857678.

It is an arithmetic number, because the mean of its divisors is an integer number (211150800).

Almost surely, 2^2516398251 is an apocalyptic number.

2516398251 is a deficient number, since it is larger than the sum of its proper divisors (862014549).

2516398251 is a wasteful number, since it uses less digits than its factorization.

2516398251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4818.

The product of its digits is 129600, while the sum is 42.

The square root of 2516398251 is about 50163.7144856718. The cubic root of 2516398251 is about 1360.1697904725.

The spelling of 2516398251 in words is "two billion, five hundred sixteen million, three hundred ninety-eight thousand, two hundred fifty-one".