2551669531 has 2 divisors, whose sum is σ = 2551669532. Its totient is φ = 2551669530.

The previous prime is 2551669529. The next prime is 2551669541. The reversal of 2551669531 is 1359661552.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2551669531 - 2¹ = 2551669529 is a prime.

It is a super-2 number, since 2×2551669531² = 13022034790867519922, which contains 22 as substring.

Together with 2551669529, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (2551669541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1275834765 + 1275834766.

It is an arithmetic number, because the mean of its divisors is an integer number (1275834766).

Almost surely, 2^2551669531 is an apocalyptic number.

2551669531 is a deficient number, since it is larger than the sum of its proper divisors (1).

2551669531 is an equidigital number, since it uses as much as digits as its factorization.

2551669531 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 243000, while the sum is 43.

The square root of 2551669531 is about 50514.0528071150. The cubic root of 2551669531 is about 1366.4953009868.

The spelling of 2551669531 in words is "two billion, five hundred fifty-one million, six hundred sixty-nine thousand, five hundred thirty-one".