2551187965 has 8 divisors (see below), whose sum is σ = 3126562560. Its totient is φ = 1997525712.

The previous prime is 2551187963. The next prime is 2551187981. The reversal of 2551187965 is 5697811552.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2551187965 - 2¹ = 2551187963 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2551187963) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 5427825 + ... + 5428294.

It is an arithmetic number, because the mean of its divisors is an integer number (390820320).

Almost surely, 2^2551187965 is an apocalyptic number.

It is an amenable number.

2551187965 is a deficient number, since it is larger than the sum of its proper divisors (575374595).

2551187965 is a wasteful number, since it uses less digits than its factorization.

2551187965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10856171.

The product of its digits is 756000, while the sum is 49.

The square root of 2551187965 is about 50509.2859284310. The cubic root of 2551187965 is about 1366.4093312495.

The spelling of 2551187965 in words is "two billion, five hundred fifty-one million, one hundred eighty-seven thousand, nine hundred sixty-five".