1647415255 has 4 divisors (see below), whose sum is σ = 1976898312. Its totient is φ = 1317932200.

The previous prime is 1647415249. The next prime is 1647415261. The reversal of 1647415255 is 5525147461.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5525147461 = 307 ⋅17997223.

It is an interprime number because it is at equal distance from previous prime (1647415249) and next prime (1647415261).

It is not a de Polignac number, because 1647415255 - 2³ = 1647415247 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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, 164741521 + ... + 164741530.

It is an arithmetic number, because the mean of its divisors is an integer number (494224578).

Almost surely, 2^1647415255 is an apocalyptic number.

1647415255 is a deficient number, since it is larger than the sum of its proper divisors (329483057).

1647415255 is an equidigital number, since it uses as much as digits as its factorization.

1647415255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 329483056.

The product of its digits is 168000, while the sum is 40.

The square root of 1647415255 is about 40588.3635417837. The cubic root of 1647415255 is about 1181.0483967507.

The spelling of 1647415255 in words is "one billion, six hundred forty-seven million, four hundred fifteen thousand, two hundred fifty-five".