6521752655 has 16 divisors (see below), whose sum is σ = 8540283168. Its totient is φ = 4741584000.

The previous prime is 6521752631. The next prime is 6521752669. The reversal of 6521752655 is 5562571256.

It is a happy number.

It is not a de Polignac number, because 6521752655 - 2¹² = 6521748559 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 173225 + ... + 207485.

It is an arithmetic number, because the mean of its divisors is an integer number (533767698).

Almost surely, 2^6521752655 is an apocalyptic number.

6521752655 is a deficient number, since it is larger than the sum of its proper divisors (2018530513).

6521752655 is a wasteful number, since it uses less digits than its factorization.

6521752655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37738.

The product of its digits is 630000, while the sum is 44.

The square root of 6521752655 is about 80757.3690445646. The cubic root of 6521752655 is about 1868.3351072317.

The spelling of 6521752655 in words is "six billion, five hundred twenty-one million, seven hundred fifty-two thousand, six hundred fifty-five".