5515651439 has 2 divisors, whose sum is σ = 5515651440. Its totient is φ = 5515651438.

The previous prime is 5515651399. The next prime is 5515651499. The reversal of 5515651439 is 9341565155.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5515651439 - 2¹² = 5515647343 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 5515651439.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5515651499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2757825719 + 2757825720.

It is an arithmetic number, because the mean of its divisors is an integer number (2757825720).

Almost surely, 2^5515651439 is an apocalyptic number.

5515651439 is a deficient number, since it is larger than the sum of its proper divisors (1).

5515651439 is an equidigital number, since it uses as much as digits as its factorization.

5515651439 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 405000, while the sum is 44.

The square root of 5515651439 is about 74267.4318863928. The cubic root of 5515651439 is about 1766.8469767826.

The spelling of 5515651439 in words is "five billion, five hundred fifteen million, six hundred fifty-one thousand, four hundred thirty-nine".