2516942251 has 4 divisors (see below), whose sum is σ = 2518848904. Its totient is φ = 2515035600.

The previous prime is 2516942243. The next prime is 2516942257. The reversal of 2516942251 is 1522496152.

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

It is a cyclic number.

It is not a de Polignac number, because 2516942251 - 2³ = 2516942243 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 2516942251.

It is not an unprimeable number, because it can be changed into a prime (2516942257) 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 3 ways as a sum of consecutive naturals, for example, 951345 + ... + 953986.

It is an arithmetic number, because the mean of its divisors is an integer number (629712226).

Almost surely, 2^2516942251 is an apocalyptic number.

2516942251 is a deficient number, since it is larger than the sum of its proper divisors (1906653).

2516942251 is a wasteful number, since it uses less digits than its factorization.

2516942251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1906652.

The product of its digits is 43200, while the sum is 37.

The square root of 2516942251 is about 50169.1364386512. The cubic root of 2516942251 is about 1360.2677981510.

The spelling of 2516942251 in words is "two billion, five hundred sixteen million, nine hundred forty-two thousand, two hundred fifty-one".